CN110707657A - Overcurrent protection setting method, overcurrent protection method and device - Google Patents
Overcurrent protection setting method, overcurrent protection method and device Download PDFInfo
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- CN110707657A CN110707657A CN201911043192.3A CN201911043192A CN110707657A CN 110707657 A CN110707657 A CN 110707657A CN 201911043192 A CN201911043192 A CN 201911043192A CN 110707657 A CN110707657 A CN 110707657A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/006—Calibration or setting of parameters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
Abstract
The application provides an overcurrent protection setting method, an overcurrent protection method and an overcurrent protection device, wherein the overcurrent protection setting method comprises the following steps: acquiring a plurality of static current data of a circuit to be protected within a first preset time period, wherein the static current data are used for representing actual component parameters of the circuit to be protected; performing effective current screening on the plurality of static current data; and determining a target overcurrent protection value corresponding to the circuit to be protected according to the result after the screening processing. According to the embodiment of the application, different actual component parameters of the circuit to be protected are determined by detecting the quiescent current corresponding to the circuit to be protected, and the overcurrent protection value corresponding to the circuit to be protected is accurately set according to the result obtained after screening the quiescent current, so that the misoperation of the circuit to be protected when overcurrent protection is executed is reduced.
Description
Technical Field
The present disclosure relates to the field of circuit technologies, and in particular, to an overcurrent protection setting method, an overcurrent protection method, and an overcurrent protection device.
Background
An inter-phase short circuit fault, abnormal load increase or insulation grade reduction and the like are often easy to occur in a power grid, so that Current can be suddenly increased and voltage can be suddenly reduced, and Over Current Protection (Over Current Protection) is a Protection mode for enabling a Protection device to act when the Current exceeds a preset maximum value. When the load short circuit, the overload or the control circuit failure occurs, the current of the switching triode in the voltage stabilizer is overlarge, so that the power consumption of the tube is increased, the tube generates heat, and if no overcurrent protection device is arranged, the high-power switching triode can be possibly damaged, so that the overcurrent protection is commonly used in the switching voltage stabilizer to prevent the circuit from being damaged.
The traditional current setting method is to artificially and directly solidify an overcurrent protection value according to the ideal condition of an electrical component, so that the overcurrent protection function usually has misoperation, and a circuit cannot normally work.
Disclosure of Invention
An object of the embodiments of the present application is to provide an overcurrent protection setting method, an overcurrent protection method, and an apparatus, so as to solve a problem that an overcurrent protection function is easily touched by mistake due to inaccurate overcurrent protection value obtained by a conventional current setting method.
In a first aspect, an embodiment of the present application provides an overcurrent protection setting method, including: acquiring a plurality of static current data of a circuit to be protected within a first preset time period, wherein the static current data are used for representing actual component parameters of the circuit to be protected; performing effective current screening on the plurality of static current data; and determining a target overcurrent protection value corresponding to the circuit to be protected according to the result after the screening processing.
According to the embodiment of the application, different actual component parameters of the circuit to be protected are determined by detecting the quiescent current corresponding to the circuit to be protected, and the overcurrent protection value corresponding to the circuit to be protected is accurately set according to the result obtained after screening the quiescent current, so that the misoperation of the circuit to be protected when overcurrent protection is executed is reduced.
Further, the determining a target overcurrent protection value corresponding to the circuit to be protected according to the result after the screening processing includes: and if at least one effective quiescent current is obtained after screening the plurality of quiescent current data, determining that a target overcurrent protection value corresponding to the circuit to be protected is the sum of the average value of the at least one effective quiescent current and an ideal overcurrent protection value corresponding to the circuit to be protected.
According to the embodiment of the application, the effective current screening is carried out on the plurality of static current data to obtain at least one effective static current, under the condition that the actual component parameters of the circuit to be protected are considered, the target overcurrent protection value is set more accurately according to the ideal overcurrent protection value, and the misoperation of the circuit to be protected in the process of executing overcurrent protection is reduced.
Further, the determining a target overcurrent protection value corresponding to the circuit to be protected according to the result after the screening processing includes: and if the effective quiescent current is not obtained after effective current screening is carried out on a plurality of quiescent current data, determining that the target overcurrent protection value corresponding to the circuit to be protected is the ideal overcurrent protection value corresponding to the circuit to be protected.
According to the embodiment of the application, effective quiescent current is not obtained after effective current screening is carried out on a plurality of quiescent current data, and then an ideal overcurrent protection value is directly used as a target overcurrent protection value so that when problems occur in internal connection of a circuit to be protected, the overcurrent protection function cannot be normally executed.
Further, the performing effective current screening on the plurality of static current data includes: an effective current screen is performed on the plurality of quiescent current data using a Laplace criterion.
According to the method and the device, effective current screening is carried out by utilizing the Lauda criterion, a plurality of static current data can be classified more accurately, whether the effective static current data which are measured accurately can be obtained or not is judged, and therefore a target overcurrent protection value corresponding to a circuit to be protected can be determined more accurately subsequently.
Further, the acquiring a plurality of static current data of the circuit to be protected in a first preset time period includes: and after the circuit to be protected is electrified and waits for a second preset time period, acquiring a plurality of static current data of the circuit to be protected in a first preset time period.
According to the embodiment of the application, the second preset time period is waited after the power is switched on, namely the collection is carried out after the circuit current is stable, so that the collected static current data are more stable and accurate, and the target overcurrent protection value corresponding to the circuit to be protected is more accurately set in the following process.
In a second aspect, an embodiment of the present application provides an overcurrent protection method, including: monitoring the real-time current of a circuit to be protected within a preset time length; comparing the value of the target overcurrent protection value obtained by the overcurrent protection setting method with the value of the real-time current; and judging whether to disconnect the power supply of the circuit to be protected or not according to the comparison result.
According to the embodiment of the application, the magnitude of the target overcurrent protection value determined according to the quiescent current is compared with the real-time current, and overcurrent protection is more accurately performed according to the comparison result, so that the misoperation of a circuit to be protected during execution of an overcurrent protection function is reduced.
Further, the real-time current is multiple, and after comparing the magnitude of the target overcurrent protection value with the magnitude of the real-time current, the method further includes: if the real-time current value is smaller than the target overcurrent protection value, reducing an overcurrent count value corresponding to the circuit to be protected; if the real-time current value is larger than or equal to the overcurrent protection value, increasing the overcurrent count value; the judging whether to cut off the power supply of the circuit to be protected according to the comparison result comprises the following steps: and when the overcurrent count value reaches a preset value within the preset time, disconnecting the power supply of the circuit to be protected.
According to the embodiment of the application, the overcurrent count value is obtained by comparing the target overcurrent protection value with the real-time current for many times, if the overcurrent timing value reaches the preset value within the preset time, the power supply is disconnected, overcurrent protection is more accurately executed, and misoperation during execution of the overcurrent protection function is reduced.
In a third aspect, an embodiment of the present application provides an overcurrent protection setting apparatus, including: the device comprises an acquisition module, a storage module and a protection module, wherein the acquisition module is used for acquiring a plurality of static current data of a circuit to be protected within a first preset time period, and the static current data is used for representing actual component parameters of the circuit to be protected; the screening module is used for screening effective currents of the plurality of static current data; and the setting module is used for determining a target overcurrent protection value corresponding to the circuit to be protected according to the result after the screening processing.
According to the embodiment of the application, the acquisition module is used for detecting the quiescent current corresponding to the circuit to be protected, so that different actual component parameters of the circuit to be protected are determined, and the setting module is used for accurately setting the overcurrent protection value corresponding to the circuit to be protected according to the result obtained after screening the quiescent current, so that the misoperation of the circuit to be protected when overcurrent protection is executed is reduced.
In a fourth aspect, an embodiment of the present application provides an overcurrent protection apparatus, including: the monitoring module is used for monitoring the real-time current of the circuit to be protected within a preset time length; the comparison module is used for comparing the target overcurrent protection value obtained according to the overcurrent protection setting method with the value of the real-time current; and the judging module is used for judging whether to disconnect the power supply of the circuit to be protected according to the comparison result.
According to the embodiment of the application, the comparison module is set to compare the real-time current with the target overcurrent protection value determined according to the quiescent current, and the judgment module is used for more accurately performing overcurrent protection according to the comparison result so as to reduce misoperation of a circuit to be protected when the overcurrent protection function is executed.
In a fifth aspect, an embodiment of the present application provides an electronic device, including: the system comprises a processor, a memory and a bus, wherein the processor and the memory are communicated with each other through the bus; the memory stores program instructions executable by the processor, which when called by the processor are capable of performing the methods described above.
In a sixth aspect, embodiments of the present application provide a non-transitory computer-readable storage medium storing computer instructions that cause the computer to perform the method as described above.
Additional features and advantages of the present application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the present application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used 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 therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic flowchart of a method for setting overcurrent protection according to an embodiment of the present application;
fig. 2 is a schematic flowchart of another overcurrent protection setting method according to an embodiment of the present application;
fig. 3 is a schematic flowchart of an overcurrent protection method according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of an overcurrent protection setting apparatus according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of an overcurrent protection apparatus according to an embodiment of the present application;
fig. 6 is a block diagram of an electronic device applicable to the 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
The embodiment of the application provides an overcurrent protection setting method, which includes the steps of representing actual component parameters of a circuit to be protected by detecting a plurality of static current data of the circuit to be protected in a first preset time period, and determining a target overcurrent protection value corresponding to the circuit to be protected according to the result of effective current screening of the plurality of static current data.
Fig. 1 is a schematic flow chart of a method for setting overcurrent protection according to an embodiment of the present application, where the method includes:
step 110: the method comprises the steps of collecting a plurality of static current data of a circuit to be protected in a first preset time period, wherein the static current data are used for representing actual component parameters of the circuit to be protected.
Because electronic components in the circuit have different manufacturing processes, different working environments and other factors, actual component parameters of the circuit and theoretical component parameters of the circuit have certain differences. If the overcurrent protection value is set only according to the theoretical component parameters of the circuit, the problem that the overcurrent protection value is set improperly may occur. For example, the overcurrent protection value is set too large, and when the actual current in the circuit exceeds the bearing range of the circuit, the actual current value may not reach the overcurrent protection value, so that the overcurrent protection cannot effectively protect the circuit. If the overcurrent protection value is set to be too small, when the actual current in the circuit reaches the overcurrent protection value, the circuit power supply is disconnected, but the actual current is still in the normal working range, so that the overcurrent protection is easy to malfunction, and the circuit cannot work normally.
In an optional implementation process of the present application, in order to set a reasonable overcurrent protection value for the circuit to be protected, a plurality of quiescent current data of the circuit to be protected in a preset time period may be obtained in advance to represent parameters of an actual component corresponding to the circuit to be protected. Therefore, the corresponding target overcurrent protection value can be determined according to the actual component parameter of the circuit to be protected, the overcurrent protection is more accurate, the misoperation during the overcurrent protection is reduced, and the normal operation of the circuit is ensured.
It should be noted that the quiescent current refers to a current when no signal is input in the circuit, that is, a current consumed by a device in the circuit without being influenced by external factors. Because the static currents corresponding to different circuits are different due to the difference of the actual parameters of the electric components of the circuits, the static currents can be used for representing the actual parameters of the components of the circuit to be protected.
After the circuit is powered on for the first time, in a first preset time period, a general motion type component does not work, and the current of the circuit is the quiescent current corresponding to the circuit. The first preset time period may be set to be short, for example, 1s or 2s, and the number of the quiescent current data collected in the first preset time period may be several tens or hundreds, for example, 50 or 100. The specific duration of the first preset time period, the number of static current data acquisition and the frequency of acquiring the static current data are not limited, and can be adjusted according to actual setting requirements.
Step 120: an active current screen is performed on the plurality of quiescent current data.
Step 130: and determining a target overcurrent protection value corresponding to the circuit to be protected according to the result after the screening processing.
In the process of acquiring a plurality of static current data, in the optional implementation process of the present application, in order to determine the overcurrent protection value corresponding to the circuit to be protected, effective current screening can be performed on the plurality of static current data acquired, so that the actual component parameters of the circuit to be protected can be more accurately characterized subsequently. According to the screened result, the current working state of the circuit to be protected can be determined, and therefore one of a plurality of over-current protection value setting modes can be determined to obtain a target over-current protection value corresponding to the circuit to be protected, so that the target over-current protection value can be more accurate, and the working requirement of the circuit to be protected can be met.
It is worth noting that during the screening process, the plurality of static current data can be divided into two types of effective current data and error current data. Through the classification to a plurality of quiescent current data, can judge whether can select effective current data, come the actual components and parts parameter of more accurate sign circuit of treating protection.
The overcurrent protection is a protection mode for enabling the protection device to act when the current exceeds a preset maximum value. When the current flowing through the protected original exceeds a preset value, the protection device is started, and the selectivity of action is ensured by time limit, so that the circuit breaker trips or gives an alarm signal. Various faults and abnormal operating states may occur during operation of the circuit, and the most common and most dangerous faults are various types of short circuits, and when a short circuit occurs, a short-circuit current flowing through a fault point is large, which may deteriorate stability of parallel operation of the circuits, and it is necessary to provide overcurrent protection in the system.
Fig. 2 is a schematic flowchart of another overcurrent protection setting method provided in the embodiment of the present application, where step 130 includes:
step 131: and if at least one effective quiescent current is obtained after effective current screening is carried out on the plurality of quiescent current data, determining that a target overcurrent protection value corresponding to the circuit to be protected is the sum of the average value of the at least one effective quiescent current and an ideal overcurrent protection value corresponding to the circuit to be protected.
In an optional implementation process of the present application, after effective current screening on static current data, if at least one effective static current can be obtained, it indicates that a circuit to be protected is working normally, and a static current corresponding to the circuit to be protected can be determined. Therefore, the static current corresponding to the circuit to be protected can be obtained by carrying out arithmetic weighted average on the effective static current obtained after screening. And meanwhile, according to the result of at least one effective quiescent current obtained after screening, determining that the target overcurrent protection value corresponding to the circuit to be protected can be the sum of the quiescent current and an ideal overcurrent protection value.
The arithmetic weighted average is carried out on the effective quiescent currents, and the weighted calculation can be carried out by setting the weight of each effective quiescent current to obtain the quiescent current corresponding to the circuit to be protected; each effective quiescent current can also be regarded as the same weight, that is, the quiescent current corresponding to the circuit to be protected is obtained by calculating the average value corresponding to at least one effective quiescent current.
In addition, in order to uniformly calculate to obtain the target overcurrent protection value, the ideal overcurrent protection value and the quiescent current may be set to be the same type of data, for example, the ideal overcurrent protection value of the analog quantity may be converted into a digital quantity according to a conversion standard of the analog-to-digital converter, and the type of the digital quantity is consistent with the type of the data of the quiescent current. Or the static current of the measured data volume can be converted into an analog volume according to the conversion standard of the analog-to-digital converter, and the analog volume is consistent with the data type of the first overcurrent protection value.
It should be noted that the ideal over-current protection value may be an over-current protection value calculated and set according to theoretical component parameters of the circuit to be protected, where the theoretical component parameters may be obtained by querying a chip manual corresponding to the circuit to be protected. The ideal over-current protection value may also be an over-current protection value set by querying relevant data of the circuit to be protected. The setting of the ideal overcurrent protection value may not be limited, and may be set according to the actual working requirement of the circuit to be protected.
On the basis of the foregoing embodiment, with continuing reference to fig. 2, step 130 further includes:
step 132: and if the effective quiescent current is not obtained after effective current screening is carried out on a plurality of quiescent current data, determining that the target overcurrent protection value corresponding to the circuit to be protected is the ideal overcurrent protection value corresponding to the circuit to be protected.
In an optional implementation process of the present application, after effective current screening is performed on static current data, if an effective static current is not obtained, it indicates that an internal connection of a circuit to be protected may be faulty, the circuit to be protected may work in an abnormal state, and a static current corresponding to the circuit to be protected cannot be accurately determined. In order to prevent the circuit damage caused by the overlarge current in the circuit to be protected, the target overcurrent protection value corresponding to the circuit to be protected can be determined as an ideal overcurrent protection value, so that the situation that the circuit to be protected is damaged when the circuit to be protected is possibly abnormal is prevented.
It should be noted that after the target overcurrent protection value corresponding to the circuit to be protected is determined according to the screening result, the target overcurrent protection value can be corrected according to the working environment of the actual circuit. For example, if the circuit is mainly applied to motor control of a certain lifting platform, the target overcurrent protection values corresponding to the actual circuit are different for the lifting process of the platform due to the influence of gravity acting.
Specifically, in the process of platform rising, because the influence of negative work is done to platform gravity, the motor of actual circuit control need overcome the gravity of platform and operate, compare in the platform descending process, the electric current is great in the circuit normal work. Therefore, when the target overcurrent protection value is corrected in the process of platform rising, the target overcurrent protection value can be increased to a certain extent. In the process of platform descending, because the influence of positive work is done to platform gravity, the motor of actual circuit control can reduce power and operate, compares in the platform process of rising, and the circuit is less in normal work electric current. Therefore, when the target overcurrent protection value is corrected in the descending process of the platform, the target overcurrent protection value can be reduced to a certain extent.
Based on any of the above embodiments, the step 120 may perform effective current screening on the plurality of static current data by using the Lauda criterion.
In the process of acquiring a plurality of static current data of the circuit to be protected, if the circuit to be protected fluctuates, the plurality of static current data may be different during acquisition. If the measured quiescent current data is directly used as the quiescent current corresponding to the circuit to be protected, the subsequent calculation of the set target overcurrent protection value may be inaccurate, and the overcurrent protection function cannot timely protect the circuit. Thus, the present application effectively current screens multiple quiescent currents by utilizing the Lauda criterion. So that the target overcurrent protection value corresponding to the circuit to be protected can be determined according to the screening result.
The Lauda criterion is also called a 3 sigma criterion, errors in a plurality of static current data can be assumed to be random errors, so that a standard current deviation can be obtained by processing the plurality of static current data, a difference is set according to a certain probability, the errors exceeding the interval are considered as not random errors but thick errors, the thick errors are removed, and therefore the rest data are used as effective static current data to complete effective current screening.
For example, when the effective current screening is performed on the plurality of static current data within the first preset time period by using the 3 σ criterion, an average value of the plurality of static current data may be obtained first. And calculating the difference value corresponding to each static current data and the average value as the error corresponding to each static current data. And according to the errors corresponding to all the quiescent current data, solving the standard deviation corresponding to all the errors as the mean square error of the plurality of quiescent current data in the first preset time period. And then judging whether the error corresponding to each static current is larger than three times of mean square error, if so, determining that the error is a coarse error, and rejecting the corresponding static current data. And taking the rest static current data as effective static current data to complete the screening of the effective current.
On the basis of any of the above embodiments, step 110 includes: and after the circuit to be protected is electrified and waits for a second preset time period, acquiring a plurality of static current data of the circuit to be protected in a first preset time period.
In an optional implementation process of the present application, in order to acquire accurate quiescent current data, after the circuit to be protected is powered on, a second preset time period may be waited for, so that after the power supply current of the circuit to be protected is stabilized, the quiescent current of the circuit to be protected is acquired, fluctuation of the quiescent current in the acquisition process may be reduced, and a more accurate quiescent current may be obtained, so that a target overcurrent protection value corresponding to the circuit to be protected may be determined later.
In order to stabilize the current of the circuit to be protected after waiting for the second preset time period, the second preset time period may be set to a shorter time period, for example, 2s or 3 s. The specific duration of the second preset time period is not limited, and can be set according to the property of the circuit power supply to be protected.
Based on the same inventive concept, the embodiment of the present application further provides an overcurrent protection method, including: monitoring the real-time current of a circuit to be protected within a preset time length; comparing the value of the target overcurrent protection value obtained by the overcurrent protection setting method with the value of the real-time current; and judging whether to disconnect the power supply of the circuit to be protected or not according to the comparison result.
In an optional implementation process of the present application, in order to implement overcurrent protection of a circuit to be protected, a plurality of preset durations are set, and the preset durations are used as a cycle to detect a real-time current of the circuit to be protected in each cycle; the target overcurrent protection value is compared with the real-time current value, and whether the to-be-protected circuit can bear the current working strength is determined according to the comparison result, so that the power supply is switched off when the current is overlarge, and components in the to-be-protected circuit are protected from being damaged.
In order to monitor the working condition of the circuit to be protected in real time, the acquisition cycle for acquiring the current of the circuit to be protected can be set as preset time, the current acquired for multiple times in the preset time is a plurality of real-time currents, the specific preset time is not limited, and the current acquisition cycle can be adjusted according to the actual overcurrent protection requirement.
Fig. 3 is a schematic flowchart of an overcurrent protection method according to an embodiment of the present application, where after comparing a target overcurrent protection value with a real-time current value, the method further includes:
step 310: and if the real-time current value is smaller than the target overcurrent protection value, reducing an overcurrent count value corresponding to the circuit to be protected.
Step 320: and if the real-time current value is greater than or equal to the overcurrent protection value, increasing the overcurrent count value.
In an optional implementation process of the present application, in order to implement an overcurrent protection function, the operating condition of a circuit to be protected may be detected by setting an overcurrent count value. And collecting the circuit to be protected for multiple times within a preset time length to obtain multiple real-time currents. Each real-time current may be compared to a target over-current protection value, and if the real-time current does not exceed the target over-current protection value, the over-current count value is decreased, otherwise the over-current count value is increased. The working condition of the circuit to be protected can be reflected by checking the magnitude of the overcurrent count value within the preset time length, so that whether the power supply of the circuit to be protected needs to be disconnected or not is judged subsequently.
The overcurrent count value may be an integer that distinguishes positive and negative, or may be a natural number that does not distinguish positive and negative. If the overcurrent count value is a natural number and the overcurrent count value is zero, the overcurrent count value is not reduced when the implementation current does not exceed the target overcurrent protection value.
On the basis of the above embodiment, the determining whether to disconnect the power supply of the circuit to be protected according to the comparison result specifically includes:
step 330: and when the overcurrent count value reaches a preset value within the preset time, disconnecting the power supply of the circuit to be protected.
In the optional implementation process of the application, if the overcurrent count value reaches a preset value in the comparison process of the real-time current and the target overcurrent protection value within a preset time, it is indicated that the current in the circuit to be protected is too large, the components of the circuit are easily damaged, and the power supply of the circuit to be protected can be disconnected. If all the real-time currents in the preset time length are completely compared with the target overcurrent protection value after the preset time length is reached, and the overcurrent counting value still does not reach the preset value, the fact that the currents in the circuit to be protected in the preset time length are in the normal working range is indicated, and the power supply of the circuit to be protected can not be disconnected.
It should be noted that, after the preset duration is reached, if the over-current count value still does not reach the preset value, the over-current count value may be cleared, so that the over-current protection function is realized again according to the magnitude of the over-current count value in the next acquisition period. The overcurrent count value is not cleared, and the working condition of the circuit to be protected in the historical acquisition period can be judged in the next acquisition period according to the initial value of the overcurrent count value.
Fig. 4 is a schematic structural diagram of an overcurrent protection setting apparatus according to an embodiment of the present application, and based on the same inventive concept, an overcurrent protection setting apparatus 400 according to an embodiment of the present application includes: the acquisition module 410 is configured to acquire a plurality of static current data of a circuit to be protected within a first preset time period, where the static current data is used to represent actual component parameters of the circuit to be protected. And a screening module 420 for performing active current screening on the plurality of static current data. And a setting module 430, configured to determine, according to the result after the screening processing, a target overcurrent protection value corresponding to the circuit to be protected.
On the basis of the foregoing embodiment, the setting module 430 is specifically configured to: and if at least one effective quiescent current is obtained after effective current screening is carried out on the plurality of quiescent current data, determining that a target overcurrent protection value corresponding to the circuit to be protected is the sum of the average value of the at least one effective quiescent current and an ideal overcurrent protection value corresponding to the circuit to be protected.
On the basis of the foregoing embodiment, the setting module 430 is specifically configured to: and if the effective quiescent current is not obtained after effective current screening is carried out on a plurality of quiescent current data, determining that the target overcurrent protection value corresponding to the circuit to be protected is the ideal overcurrent protection value corresponding to the circuit to be protected.
On the basis of any of the above embodiments, the screening module 420 is specifically configured to: an effective current screen is performed on the plurality of quiescent current data using a Laplace criterion.
On the basis of any of the above embodiments, the acquisition module 410 is specifically configured to: and after the circuit to be protected is electrified and waits for a second preset time period, acquiring a plurality of static current data of the circuit to be protected in a first preset time period.
The embodiment of the present application provides a device 400 for setting fault over-current protection for performing the above method, and the specific implementation thereof is consistent with the implementation of the method for setting over-current protection, which is not described herein again.
Fig. 5 is a schematic structural diagram of an overcurrent protection apparatus provided in an embodiment of the present application, and based on the same inventive concept, an embodiment of the present application further provides an overcurrent protection apparatus 500, including: and the monitoring module 510 is configured to monitor a real-time current of the circuit to be protected within a preset time period. And the comparison module 520 is used for comparing the target overcurrent protection value with the magnitude of the real-time current value. And the judging module 530 is configured to judge whether to disconnect the power supply of the circuit to be protected according to the comparison result.
On the basis of the above embodiment, the real-time current is plural, and the apparatus further includes: and when the real-time current value is smaller than the target overcurrent protection value, the counting module is used for reducing the overcurrent counting value corresponding to the circuit to be protected. And when the real-time current value is greater than or equal to the overcurrent protection value, the counting module is used for increasing the overcurrent counting value. The determining module 530 is specifically configured to: and when the overcurrent count value reaches a preset value within the preset time, disconnecting the power supply of the circuit to be protected.
The over-current protection device 500 provided in the embodiment of the present application is used to execute the above method, and a specific implementation manner thereof is consistent with that of the over-current protection method, and is not described here again.
Referring to fig. 6, fig. 6 is a block diagram illustrating a structure of an electronic device 10 applicable to the embodiment of the present application. The electronic device 10 may include a memory 101, a memory controller 102, a processor 103, a peripheral interface 104, an input-output unit 105, a display unit 107.
The memory 101, the memory controller 102, the processor 103, the peripheral interface 104, the input/output unit 105, and the display unit 107 are electrically connected to each other directly or indirectly to implement data transmission or interaction. For example, the components may be electrically connected to each other via one or more communication buses or signal lines. At least one software or firmware (firmware) is stored in the memory 101 or a software function module solidified in an Operating System (OS). The processor 103 is used to execute executable modules, software functional modules or computer programs stored in the memory 101.
The Memory 101 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Read-Only Memory (EPROM), an electrically Erasable Read-Only Memory (EEPROM), and the like. The memory 101 is configured to store a program, and the processor 103 executes the program after receiving an execution instruction, and the method disclosed in any of the foregoing embodiments of the present application may be applied to the processor 103, or implemented by the processor 103.
The processor 103 may be an integrated circuit chip having signal processing capabilities. The Processor 103 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor 103 may be any conventional processor or the like.
The peripheral interface 104 couples various input/output devices to the processor 103 as well as to the memory 101. In some embodiments, the peripheral interface 104, the processor 103, and the memory controller 102 may be implemented in a single chip. In other examples, they may be implemented separately from the individual chips.
The input/output unit 105 is used for providing input data to a user to enable the user to interact with the electronic device 10. The input/output unit 105 may be, but is not limited to, a mouse, a keyboard, and the like.
The display unit 107 provides an interactive interface (e.g., a user interface) between the electronic device 10 and a user or for displaying image data to a user reference. In this embodiment, the display unit 107 may be a liquid crystal display or a touch display. In the case of a touch display, the display can be a capacitive touch screen or a resistive touch screen, which supports single-point and multi-point touch operations. Supporting single-point and multi-point touch operations means that the touch display can sense touch operations simultaneously generated from one or more positions on the touch display, and the sensed touch operations are sent to the processor 103 for calculation and processing.
It will be appreciated that the configuration shown in FIG. 6 is merely illustrative and that the electronic device 10 may include more or fewer components than shown in FIG. 6 or may have a different configuration than shown in FIG. 6. The components shown in fig. 6 may be implemented in hardware, software, or a combination thereof.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working process of the apparatus described above may refer to the corresponding process in the foregoing method, and will not be described in too much detail herein.
To sum up, the embodiment of the present application provides an overcurrent protection setting method, an overcurrent protection method and an apparatus, where the overcurrent protection setting method includes: acquiring a plurality of static current data of a circuit to be protected within a first preset time period, wherein the static current data are used for representing actual component parameters of the circuit to be protected; performing effective current screening on the plurality of static current data; and determining a target overcurrent protection value corresponding to the circuit to be protected according to the result after the screening processing. According to the embodiment of the application, different actual component parameters of the circuit to be protected are determined by detecting the quiescent current corresponding to the circuit to be protected, and the overcurrent protection value corresponding to the circuit to be protected is accurately set according to the result obtained after screening the quiescent current, so that the misoperation of the circuit to be protected when overcurrent protection is executed is reduced.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of 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 of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
In addition, 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 network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Furthermore, the functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
It should be noted that the functions, if implemented in the form of software functional modules and sold or used as independent products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including 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 application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
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 above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (11)
1. An overcurrent protection setting method is characterized by comprising the following steps:
acquiring a plurality of static current data of a circuit to be protected within a first preset time period, wherein the static current data are used for representing actual component parameters of the circuit to be protected;
performing effective current screening on the plurality of static current data;
and determining a target overcurrent protection value corresponding to the circuit to be protected according to the result after the screening processing.
2. The method according to claim 1, wherein the determining a target over-current protection value corresponding to the circuit to be protected according to the result after the screening process comprises:
and if at least one effective quiescent current is obtained after effective current screening is carried out on the plurality of quiescent current data, determining that a target overcurrent protection value corresponding to the circuit to be protected is the sum of the average value of the at least one effective quiescent current and an ideal overcurrent protection value corresponding to the circuit to be protected.
3. The method according to claim 2, wherein the determining a target over-current protection value corresponding to the circuit to be protected according to the result after the screening process comprises:
and if the effective quiescent current is not obtained after effective current screening is carried out on a plurality of quiescent current data, determining that the target overcurrent protection value corresponding to the circuit to be protected is the ideal overcurrent protection value corresponding to the circuit to be protected.
4. The overcurrent protection setting method according to any one of claims 1 to 3, wherein the performing effective current screening on the plurality of quiescent current data includes:
an effective current screen is performed on the plurality of quiescent current data using a Laplace criterion.
5. The overcurrent protection setting method according to any one of claims 1 to 3, wherein the acquiring a plurality of static current data of the circuit to be protected in a first preset time period includes:
and after the circuit to be protected is electrified and waits for a second preset time period, acquiring a plurality of static current data of the circuit to be protected in a first preset time period.
6. An overcurrent protection method, comprising:
monitoring the real-time current of a circuit to be protected within a preset time length;
comparing the magnitude of the target overcurrent protection value obtained by the overcurrent protection setting method according to any one of claims 1 to 5 with the magnitude of the real-time current value;
and judging whether to disconnect the power supply of the circuit to be protected or not according to the comparison result.
7. The over-current protection method according to claim 6, wherein the real-time current is plural, and after comparing the magnitude of the target over-current protection value with the magnitude of the real-time current, the method further comprises:
if the real-time current value is smaller than the target overcurrent protection value, reducing an overcurrent count value corresponding to the circuit to be protected;
if the real-time current value is larger than or equal to the overcurrent protection value, increasing the overcurrent count value;
the judging whether to cut off the power supply of the circuit to be protected according to the comparison result comprises the following steps:
and when the overcurrent count value reaches a preset value within the preset time, disconnecting the power supply of the circuit to be protected.
8. An overcurrent protection setting apparatus, comprising:
the device comprises an acquisition module, a storage module and a protection module, wherein the acquisition module is used for acquiring a plurality of static current data of a circuit to be protected within a first preset time period, and the static current data is used for representing actual component parameters of the circuit to be protected;
the screening module is used for screening effective currents of the plurality of static current data;
and the setting module is used for determining a target overcurrent protection value corresponding to the circuit to be protected according to the result after the screening processing.
9. An overcurrent protection device, comprising:
the monitoring module is used for monitoring the real-time current of the circuit to be protected within a preset time length;
a comparison module, configured to compare a target overcurrent protection value obtained by the overcurrent protection setting method according to any one of claims 1 to 5 with a value of the real-time current;
and the judging module is used for judging whether to disconnect the power supply of the circuit to be protected according to the comparison result.
10. An electronic device, comprising: a processor, a memory, and a bus, wherein,
the processor and the memory are communicated with each other through the bus;
the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any one of claims 1-7.
11. A non-transitory computer-readable storage medium storing computer instructions that cause a computer to perform the method of any one of claims 1-7.
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