Current-sensing based multi-stage overload protection socket and overload protection method thereof

Abstract

The application relates to the technical field of socket protection, in particular to a power consumption multi-stage overload protection socket based on current sensing and an overload protection method thereof, which obtains monitoring current data of each power consumption socket; determines the instantaneous impact of each power consumption socket on power consumption equipment based on the change of the monitoring current data of each power consumption socket and in combination with the change of the monitoring current data of other power consumption sockets; determines the overload protection threshold adjustment coefficient of each power consumption socket based on the instantaneous impact of each power consumption socket on power consumption equipment; adjusts the overload protection threshold of each power consumption socket based on the overload protection threshold adjustment coefficient, and performs power consumption overload protection based on the adjusted overload protection threshold. The overload protection threshold of each power consumption socket is dynamically adjusted by using the overload protection threshold adjustment coefficient, the problems of protection misoperation and protection delay are avoided, and the overload protection reliability is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of electrical outlet technology, specifically to a multi-level overload protection outlet based on current sensing and its overload protection method. Background Technology

[0002] In modern society, electricity has become a fundamental part of people's lives and work. With the widespread use of electronic devices and household appliances, the electrical load in homes and businesses is constantly increasing, making electrical safety issues increasingly prominent. Traditional sockets often lack effective protection measures and cannot monitor and control current in real time, leading to an increased risk of equipment overload. Current-sensing multi-level overload protection sockets typically include components such as current sensors, control circuits, indicator lights, and protective switches. They monitor the circuit current in real time through the current sensor. When the current exceeds a set threshold (e.g., 20A), an electromagnetic trip unit is triggered to disconnect the circuit, preventing overheating of the line or damage to the equipment. They support multi-level current protection (e.g., adjustable from 4 to 20A) to adapt to different electrical load requirements.

[0003] While existing multi-level overload protection sockets based on current sensing have certain advantages in overload protection, they have limitations in overcurrent response. For example, because they use fixed thresholds for overcurrent protection judgment, they are prone to false tripping or insufficient protection, leading to equipment damage or other safety hazards. Therefore, there is an urgent need to develop a reliable overload protection socket to ensure electrical safety. Summary of the Invention

[0004] To address the poor reliability of existing multi-level overload protection sockets, the present invention aims to provide a current-sensing-based multi-level overload protection socket and its overload protection method. The specific technical solution adopted is as follows: In a first aspect, the present invention provides a multi-level overload protection method for electricity consumption based on current sensing, comprising the following steps: Obtain monitoring current data for each power socket in the socket; Based on the changes in the monitoring current data of each power socket, and in combination with the changes in the monitoring current data of other power sockets, the instantaneous impact of each power socket on the electrical equipment is determined. Based on the instantaneous impact, the overload protection threshold adjustment coefficient for each electrical socket is determined; Based on the overload protection threshold adjustment coefficient, the overload protection threshold of each power socket is adjusted, and power overload protection is performed based on the adjusted overload protection threshold.

[0005] In conjunction with the first aspect above, among some possible implementations, determining the instantaneous impact of each electrical socket on the electrical equipment includes: Based on the slope distribution of each current value in the monitoring current data of each power socket during the current monitoring period, the initial instantaneous impact of each power socket on the electrical equipment is determined. Based on the differences in the monitoring current data of other power sockets between the current monitoring period and previous historical monitoring periods, the impulse correction parameters are determined. The initial instantaneous impact is corrected using impact correction parameters to finally obtain the instantaneous impact of each power socket on the electrical equipment.

[0006] In conjunction with the first aspect above, among some possible implementations, determining the initial transient impact of each electrical socket on the electrical equipment includes: For each power socket, the slopes of all current values ​​in the monitoring current data during the current monitoring period are classified into two sets to obtain a first slope set and a second slope set. The slopes in the first slope set are greater than the slopes in the second slope set. Based on the distribution level of all slopes in the first slope set, the distribution of all slopes in the first slope set at the corresponding acquisition time in the current monitoring period, and combined with the slope difference between the first slope set and the second slope set, the current burst of each power socket is determined. Based on the proportion of current values ​​exceeding the rated current among all current values ​​corresponding to all slopes in the first slope set, and the proportion of slopes among all slopes in the first slope set in the current monitoring period, the sudden continuity of each power socket in the current monitoring period is determined. Based on the aforementioned current burst and the stated burst duration, the initial instantaneous impact of each power socket on the electrical equipment is determined.

[0007] In conjunction with the first aspect above, in some possible implementations, the current burstiness of each electrical socket is determined, including: Based on the distribution level of all slopes in the first slope set, and combined with the distribution level of the time interval between adjacent acquisition times corresponding to the current monitoring period, the current change rate index of each power socket is determined. The current burst of each power socket is determined based on the current change rate index and the magnitude of the slope difference between the first slope set and the second slope set.

[0008] In conjunction with the first aspect above, in some possible implementations, the current change rate index for each electrical socket is determined, including: Determine the average value of all slopes in the first slope set to obtain the first average slope; The average time interval is obtained by determining the average time interval between all adjacent acquisition times corresponding to the first slope set; The current change rate index for each power socket is determined based on the average time interval and the first average slope.

[0009] In conjunction with the first aspect above, in some possible implementations, the current burstiness of each electrical socket is determined, including: Determine the average value of all slopes in the second slope set to obtain the second average slope; Determine the difference between the first average slope and the second average slope; Based on the current change rate index and the difference value, the current surge of each power socket during the current monitoring period is determined.

[0010] In conjunction with the first aspect mentioned above, among some possible implementation methods, the impact correction parameters are determined, including: Determine the discrete index of the monitoring current data of each other power socket in the current monitoring period and in each of the previous historical monitoring periods; The average difference is determined based on the distribution level of the difference between the discrete index of each other power outlet in the current monitoring period and the discrete index of previous monitoring periods. The average value of the average difference of each of the other power sockets is determined to obtain the impact correction parameter.

[0011] In conjunction with the first aspect above, in some possible implementations, the overload protection threshold adjustment coefficient for each electrical outlet is determined, including: Obtain overload protection data for each electrical socket in the socket; Based on the overload protection data of each electrical socket, the overload protection hysteresis of each electrical socket is determined. Based on the instantaneous impact of each power socket on the electrical equipment and the overload protection hysteresis of each power socket, the overload protection threshold adjustment coefficient of each power socket is determined.

[0012] In conjunction with the first aspect above, in some possible implementations, the overload protection related data includes: the trigger time and action time of each overload protection activation, and the trigger current value at each activation; determining the overload protection hysteresis of each electrical socket includes: Determine the interval between the trigger time and the action time of each overload protection activation; The overload protection hysteresis of each electrical socket is determined based on the difference between the trigger current value and the rated current at the most recent overload protection activation, and the corresponding interval time.

[0013] Secondly, the present invention also provides a multi-level overload protection socket based on current sensing, including a socket body and an overload protection device. The overload protection device includes a current sensor for collecting current data of each socket in the socket body and a processing unit. The processing unit is connected to the current sensor for sampling and is used to implement the method as described in the first aspect or any possible implementation of the first aspect.

[0014] Thirdly, the present invention also provides a computer program product comprising: computer program code, which, when run on a computer, causes the computer to perform the method described in the first aspect or any possible implementation thereof.

[0015] Fourthly, the present invention also provides a computer-readable storage medium storing computer program code that, when executed on a computer, causes the computer to perform the method described in the first aspect or any possible implementation thereof.

[0016] The present invention has the following beneficial effects: By monitoring the changes in current data of each electrical socket in the socket and combining the changes in current data of other electrical sockets, the instantaneous impact of each electrical socket on the electrical equipment is determined. Then, based on the instantaneous impact, an overload protection threshold adjustment coefficient is determined, and the overload protection threshold of each electrical socket is adaptively adjusted using this overload protection threshold adjustment coefficient. In the event of a sudden current change causing significant impact damage to the equipment, the overload protection threshold is lowered to initiate overload protection operation in advance, reducing the continuous impact of current on the equipment. Conversely, in the event of a sudden current change that will not cause impact damage to the equipment, the overload protection threshold is raised to delay overload protection operation, avoiding problems of protection malfunction and untimely protection, and significantly improving the reliability of current overload protection. Attached Figure Description

[0017] To more clearly illustrate the technical solutions and advantages in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a flowchart illustrating the steps of a multi-level overload protection method for power consumption based on current sensing, according to an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of a multi-level overload protection socket based on current sensing according to an embodiment of the present invention; Wherein: 1 represents the processing unit; 2 represents the current sensor; 3 represents the socket body; 4 represents the socket hole; 5 represents the reset mechanism. Detailed Implementation

[0019] To clearly illustrate the technical features of this solution, the invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0020] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the invention. It should be understood that the accompanying drawings and embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the invention.

[0021] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0022] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.

[0023] It should be noted that the concepts of "first" and "second" mentioned in this invention are only used to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0024] Although operations or steps are described in a specific order in the accompanying drawings in the embodiments of the present invention, this should not be construed as requiring these operations or steps to be performed in the specific order or serial order shown, or requiring all of the shown operations or steps to be performed to obtain the desired result. In the embodiments of the present invention, these operations or steps may be performed serially; they may be performed in parallel; or a portion of these operations or steps may be performed.

[0025] Furthermore, it is understood that the data involved in the technical solutions of this invention (including but not limited to the data itself, the acquisition or use of the data) shall comply with the requirements of relevant laws, regulations and related provisions. Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains, and all parameters or indicators in the formulas involved in this invention are normalized values ​​that have eliminated the influence of dimensions.

[0026] To address the poor reliability of existing multi-level overload protection sockets, this invention provides a current-sensing-based multi-level overload protection socket and its overload protection method. By dynamically adjusting the overload protection threshold of each socket using an overload protection threshold adjustment coefficient, the invention effectively avoids protection malfunctions and untimely protection, significantly improving the reliability of overload protection.

[0027] The following will describe in detail, with reference to the accompanying drawings, a multi-level overload protection socket based on current sensing and its overload protection method provided by an embodiment of the present invention.

[0028] Figure 1 This diagram illustrates the basic flow chart of a multi-level overload protection method for power consumption based on current sensing, as provided in an embodiment of the present invention. Figure 1 As shown, the method specifically includes the following steps: Step S100: Obtain the monitoring current data of each power socket in the socket.

[0029] Specifically, the multi-level overload protection socket has multiple sockets. Current sensors are installed in the power strip to monitor the current data of each socket in real time during use, and an appropriate sampling frequency is set to ensure the real-time performance and accuracy of the data. The type of current sensor can be selected appropriately according to needs, such as a Hall sensor or a shunt resistor. Hall sensors are typically used for high current measurements, while shunt resistors are suitable for lower current measurements. The current data collected by the current sensors is converted from analog signals to digital signals by an ADC (Analog-to-Digital Converter) and then sent to the socket's overload protection device. The processing unit in the overload protection device preprocesses the received current data, such as by filtering, to eliminate noise and transient interference, thus obtaining the monitored current data for each socket. Since only the sockets currently in use need to be protected, the sockets currently in use are identified, and those connected to electrical equipment are designated as "powered sockets," thereby allowing the determination of the monitored current data for each powered socket.

[0030] Step S200: Based on the changes in the monitoring current data of each power socket, and in combination with the changes in the monitoring current data of other power sockets, determine the instantaneous impact of each power socket on the electrical equipment.

[0031] Specifically, the changes in the monitored current data for each power socket are analyzed to assess the impact of sudden current changes on the connected equipment. Furthermore, a change in the output current of one socket can directly or indirectly affect devices connected to other sockets in the same outlet. This impact involves not only current distribution but can also lead to voltage fluctuations, load variations, and other phenomena, thus affecting the normal operation of the equipment. For example, most multi-level overload protection sockets can incorporate a smart IC chip that monitors the current usage of each socket in real time. When the load on a particular socket is too high, the system automatically reduces the current distribution to that socket while optimizing the current output of other sockets to prevent overload and short circuits, ensuring the overall load remains within a safe range, effectively guaranteeing electrical safety and extending the lifespan of the equipment.

[0032] Therefore, by analyzing the changes in the monitoring current data of each power socket and combining them with the changes in the monitoring current data of other power sockets, the instantaneous impact of each power socket on the electrical equipment is determined, which is used to quantify the degree of instantaneous impact caused by the sudden change in current of the power socket on the electrical equipment.

[0033] Furthermore, in one possible implementation, determining the instantaneous impact of each electrical socket on the electrical equipment in step S200 includes: Step S201: Based on the slope distribution of each current value in the monitoring current data of each power socket during the current monitoring period, determine the initial instantaneous impact of each power socket on the electrical equipment.

[0034] Specifically, a past time period is used as the current monitoring period, such as the past 10 minutes. The monitoring current data for each power outlet during this period (the past 10 minutes) is obtained. The slope distribution of each current value in this monitoring current data is analyzed to determine the initial instantaneous impact of each power outlet on the electrical equipment. During the use of the overload protection socket, if the rate of change of current in the monitoring current data is high and the change in current amplitude is drastic, it indicates that there is a certain degree of suddenness in the output current at the outlet location. Furthermore, if this suddenness does not occur and disappear instantaneously but persists for a continuous period, the impact on the electrical equipment will be higher.

[0035] Furthermore, in one possible implementation, determining the initial transient impact of each electrical socket on the electrical equipment in step S201 includes: Step S2011: Perform binary classification on all slopes of each current value in the monitoring current data of each power socket during the current monitoring period to obtain a first slope set and a second slope set. The slope in the first slope set is greater than the slope in the second slope set.

[0036] Specifically, for each electrical socket in the outlet, the slope of each current value in the monitoring current data for that socket during the current monitoring period is determined. All current value slopes are reordered in ascending order to obtain a slope sequence. Within this slope sequence, the absolute value of the difference between any two adjacent slopes is determined. Then, all absolute values ​​of difference are iterated through, and the two slopes corresponding to the largest absolute difference are marked. The midpoint between these two marked slopes is used as a dividing point to split the slope sequence into two parts: the right side represents the set of slopes with larger slope changes, which is designated as the first slope set; the left side represents the set of slopes with smaller slope changes, which is designated as the second slope set.

[0037] Step S2012: Based on the distribution level of all slopes in the first slope set, and the distribution of all slopes in the first slope set at the corresponding acquisition time in the current monitoring period, and combined with the slope difference between the first slope set and the second slope set, determine the current burst of each power socket.

[0038] Specifically, based on the first and second slope sets, the current burstiness of each power outlet is determined. Current burstiness reflects the degree to which current data increases significantly within a short period of time. For the first slope set with large slope changes, when the slopes in the first slope set are generally large and these slopes occur concentratedly during the current monitoring period, and when the slopes in the first slope set are much higher than the slopes in the second slope set, it indicates that the current change rate at the current power outlet is higher and the current amplitude changes more drastically. This suggests that the current increase may exceed the set value within a short period of time, thus indicating a higher current burstiness at the current power outlet.

[0039] Furthermore, in one possible implementation, determining the current burst of each power socket in step S2012 above includes: Step S20121: Based on the distribution level of all slopes in the first slope set, and combined with the distribution level of the time interval between adjacent acquisition times corresponding to the current monitoring period of all slopes in the first slope set, determine the current change rate index of each power socket.

[0040] Specifically, the average value of all slopes in the first slope set is determined to obtain the first average slope; the average value of the time intervals between all adjacent acquisition times corresponding to the first slope set is determined to obtain the average time interval; based on the average time interval and the first average slope, the current change rate index for each power socket is determined. Wherein, the larger the first average slope and the smaller the average time interval, the larger the overall slopes in the first slope set are, and the stronger the instantaneous change in current, and the larger the corresponding current change rate index value.

[0041] Furthermore, in one specific implementation, the current change rate index for each electrical socket is calculated using the following formula: In the formula: Indicates the first The rate of change of current in each electrical socket; Indicates the first The average of all slopes in the first slope set of a power socket, i.e., the first average slope; Indicates the first The first slope set of each power socket corresponds to the average time interval between all adjacent acquisition times, i.e., the average time interval.

[0042] Step S20122: Determine the current burst of each power socket based on the current change rate index and the magnitude of the slope difference between the first slope set and the second slope set.

[0043] Specifically, the average value of all slopes in the second slope set is determined to obtain the second average slope; the difference between the first average slope and the second average slope is determined; based on the current change rate index and the difference value, the current surge of each power outlet during the current monitoring period is determined. Specifically, in the monitored current data during the current monitoring period, if the value of the current change rate index is larger, and the difference between the first average slope and the second average slope is larger, it indicates a higher current change rate and more drastic changes in current amplitude, thus indicating a higher current surge of the current outlet.

[0044] Furthermore, in one specific implementation, the current surge of each power outlet during the current monitoring period is calculated using the following formula: ; In the formula: Indicates the first Sudden current in a power socket; Indicates the first The rate of change of current in each electrical socket; Indicates the first The average of all slopes in the first slope set of a power socket, i.e., the first average slope; This represents the average of all slopes in the second slope set, i.e., the second average slope.

[0045] Step S2013: Based on the proportion of current values ​​exceeding the rated current among all current values ​​corresponding to all slopes in the first slope set, and the proportion of slopes among all slopes in the first slope set in the current monitoring period, determine the sudden continuity of each power socket in the current monitoring period.

[0046] Specifically, a surge impact refers to the instantaneous load change on equipment caused by a sudden current surge, which may lead to decreased equipment performance, overheating, or damage. Therefore, identifying and quantifying such surges can effectively reduce the impact of current overload on sockets for overload protection.

[0047] The slopes included in the first slope set are statistically analyzed, and the proportion of each slope in the current monitoring period is determined. Since the slopes in the first slope set can be considered as sudden currents occurring during socket use in the current monitoring period, a larger proportion indicates a more pronounced sudden current surge in the current sensing period. Simultaneously, the proportion of current values ​​exceeding the rated current among all slopes in the first slope set is determined. A larger proportion indicates a more significant phenomenon of exceeding the rated current.

[0048] Therefore, based on the proportion of current values ​​exceeding the rated current among all current values ​​corresponding to all slopes in the first slope set, and the proportion of all slopes in the first slope set among all slopes corresponding to the current monitoring period, the burst duration of each power socket in the current monitoring period is determined, which is used to quantify the degree of current surge duration in the current monitoring period. Specifically, the larger the proportions of slopes and current values, the stronger the burst duration of the current at the corresponding socket location in the current monitoring period, and the larger the corresponding burst duration value. In one specific implementation, the product of the proportion of slopes and the proportion of current values ​​is determined, and this product is used as the burst duration.

[0049] Step S2014: Based on the current burst and the burst duration, determine the initial instantaneous impact of each power socket on the electrical equipment.

[0050] Specifically, during the use of overload protection sockets, if the output current at the socket location exhibits a high degree of suddenness and sustained duration, the instantaneous impact of the current surge on the equipment will be greater. Therefore, based on the current suddenness and its duration, the initial instantaneous impact of each power socket on the electrical equipment is determined, with larger values ​​for both current suddenness and its duration corresponding to a larger instantaneous impact. In one specific implementation, the product of the current suddenness and its duration is determined and used as the initial instantaneous impact.

[0051] Step S202: Determine the impulse correction parameters based on the difference in the monitoring current data of other power sockets between the current monitoring period and the previous historical monitoring periods.

[0052] Specifically, after identifying the potential instantaneous impact of a sudden current surge on equipment, it's crucial to further examine the inter-socket interactions within the same socket. Since a significant change in the output current of one socket can directly or indirectly affect devices connected to other sockets in the same outlet, a thorough analysis of the differences in current data between other sockets during the current monitoring period and previous historical monitoring periods is necessary to determine impact correction parameters. This allows for the assessment of the influence of the current socket's current data change on the current changes of other sockets, thereby correcting the initial instantaneous impact of the current socket on the equipment and improving the accuracy of the determined instantaneous impact.

[0053] Furthermore, in one possible implementation, determining the impact correction parameter in step S202 above includes: Step S2021: Determine the discrete index of the monitoring current data of each other power socket in the current monitoring period and in each of the previous historical monitoring periods.

[0054] Specifically, several monitoring periods preceding the current monitoring period are determined. This involves moving the current monitoring period (i.e., the past 10 minutes) forward along the time axis in a set step size (e.g., 1 minute). Each move yields a historical monitoring period preceding the current one, and a set number R (e.g., R=5) of these historical monitoring periods are obtained. For the current monitoring period and all preceding historical monitoring periods, the variance of the monitoring current data for each other power outlet in each monitoring period is determined, and this variance is used as a discrete index to obtain the discrete index corresponding to each monitoring period.

[0055] Step S2022: Determine the average difference based on the distribution level of the difference between the discrete index of each other power outlet in the current monitoring period and the discrete index of each previous historical monitoring period.

[0056] Step S2023: Determine the average value of the average difference of each of the other power sockets to obtain the impact correction parameter.

[0057] Specifically, the impulse correction parameter is determined based on the average distribution of the average differences among the other power sockets. When a sudden change in current occurs in a power socket, if the average difference among the other power sockets is relatively large, it indicates that the current change in the current of the current socket has a greater impact on the current of the other sockets, and the corresponding impulse correction parameter value should be larger.

[0058] Furthermore, in one specific implementation, the impact correction parameter is calculated using the following formula: ; In the formula: Indicates the first Impact correction parameters for each electrical socket; This represents the discrete index of the other i-th power socket during the current monitoring period; This represents the discrete index of the other i-th power socket in the r-th historical monitoring period preceding the current monitoring period; This represents the total number of other i-th power outlets in the preceding historical monitoring periods during the current monitoring period; This indicates the total number of other electrical outlets; It represents an infinitesimal quantity greater than zero, used to prevent the denominator from being zero; Indicates the first The average difference between the first power socket and the other i-th power socket.

[0059] Step S203: Use the impact correction parameter to correct the initial instantaneous impact of each power socket on the electrical equipment, and finally obtain the instantaneous impact of each power socket on the electrical equipment.

[0060] Specifically, if a sudden and sustained current change occurs in the current sensed at the current power socket, and the behavior of other power sockets also differs significantly from previous changes, it indicates that the other output terminals have been affected by the sudden current change in the current power socket during the current monitoring period. This suggests that the current power socket has a strong instantaneous impact on the electrical equipment. Therefore, an impact correction parameter is used to correct the initial instantaneous impact of each power socket on the electrical equipment, thus obtaining the final instantaneous impact of each power socket on the electrical equipment. In one specific implementation, the product of the impact correction parameter and the initial instantaneous impact of each power socket on the electrical equipment is calculated, and this product is used as the final instantaneous impact.

[0061] Step S300: Based on the instantaneous impact of each power socket on the electrical equipment, determine the overload protection threshold adjustment coefficient for each power socket.

[0062] Specifically, based on the instantaneous impact of each power socket on the electrical equipment, an overload protection threshold adjustment coefficient is determined for each power socket to adaptively adjust the overload protection threshold. When the instantaneous impact is high, it indicates a severe current surge at the current power socket that is affecting other power sockets. In this case, the overload protection mechanism needs to respond promptly; therefore, a smaller overload protection threshold adjustment coefficient is determined to appropriately lower the overload protection threshold, making overload protection triggering more timely.

[0063] Multi-level overload protection relies not only on instantaneous current monitoring and corresponding current cutoff responses, but also on the hysteresis of the protection mechanism. Hysteresis is typically caused by the time delay between current sensing, signal processing, and actuator response. In multi-level overload protection design, it is necessary to consider how to reduce response delays while ensuring equipment safety, to avoid equipment damage or safety hazards caused by hysteresis. Therefore, based on determining the instantaneous impact of each electrical socket on the equipment, it is also necessary to analyze the overload protection data of the sockets, determine the overload protection hysteresis, and adjust the trigger threshold in the overload protection mechanism in conjunction with the overload protection hysteresis to more promptly respond to sudden current surges in the sockets.

[0064] Furthermore, in one possible implementation, determining the overload protection threshold adjustment factor for each electrical outlet includes: Step S301: Obtain overload protection data for each electrical socket of the socket.

[0065] Specifically, overload protection thresholds are set during the use of overload protection sockets. When the current exceeds the overload protection threshold, corresponding overload protection measures are triggered. Generally, multiple overload protection thresholds are set. When the current exceeds different overload protection thresholds, different overload protection operations are executed, such as initiating a warning, limiting current, or immediately cutting off the power. By collecting historical monitoring current data and recording historical overload protection operation data from current sensors, overload protection-related data for each electrical socket is obtained. This data includes the trigger time and action time of each overload protection activation, as well as the trigger current value each time the overload protection is activated. The trigger time refers to the time when the current in the electrical socket exceeds the corresponding overload protection threshold, and the action time refers to the time when different overload protection operations are executed.

[0066] Step S302: Based on the overload protection data of each power socket, determine the overload protection hysteresis of each power socket.

[0067] Specifically, protection delay helps optimize the design of protection mechanisms, enabling them to react within an appropriate time and prevent equipment damage caused by overload. Precise response time ensures that protection is triggered before the current reaches a safe threshold, reducing false alarms. However, excessive operational delays for different overload protection operations can allow sudden current surges in the socket to accumulate, causing irreversible damage to the current socket and even other output devices. Therefore, analyzing overload protection data for each electrical socket to determine its overload protection hysteresis, and combining this hysteresis with the instantaneous impact of the socket on the electrical equipment, allows for adjustments to the overload protection threshold in the overload protection mechanism, enabling more timely responses to sudden current surges in the socket.

[0068] Furthermore, in one possible implementation, determining the overload protection hysteresis of each electrical socket includes: determining the interval between the trigger time and the action time of each overload protection activation; and determining the overload protection hysteresis of each electrical socket based on the difference between the trigger current value and the rated current during the most recent overload protection activation, and the corresponding interval.

[0069] Specifically, the greater the difference between the trigger current value and the rated current when the overload protection is activated, and the longer the interval, the higher the delay in the socket's overload protection action during the corresponding monitoring period, indicating a higher overload protection lag during the corresponding monitoring period.

[0070] Furthermore, in one specific implementation, the overload protection hysteresis of each electrical socket is calculated using the following formula: ; In the formula: Indicates the first The hysteresis of overload protection for individual power sockets; Indicates the first The trigger current value of each electrical socket during the most recent overload protection activation; Indicates the first The rated current of each electrical socket; Indicates the first The timing of the operation of each electrical outlet during its most recent overload protection activation; Indicates the first The trigger time of the most recent overload protection activation of each electrical outlet.

[0071] Using the above method, the overload protection hysteresis of each power socket can be determined. When each power socket is set with multiple overload protection thresholds, that is, when there are different types of overload protection operations, an overload protection hysteresis will be obtained for each type of overload protection operation.

[0072] Step S303: Based on the instantaneous impact of each power socket on the electrical equipment and the overload protection hysteresis of each power socket, determine the overload protection threshold adjustment coefficient for each power socket.

[0073] Specifically, based on the instantaneous impact of each electrical socket on the electrical equipment and the overload protection hysteresis of each electrical socket, an overload protection threshold adjustment coefficient can be determined for each electrical socket to adaptively adjust the overload protection threshold. Specifically, the larger the values ​​of instantaneous impact and overload protection hysteresis, the smaller the corresponding overload protection threshold adjustment coefficient.

[0074] Furthermore, in one specific implementation, the overload protection threshold adjustment coefficient for each electrical outlet is calculated using the following formula: ; In the formula: Indicates the first Overload protection threshold adjustment coefficient for each electrical socket; Indicates the first The hysteresis of overload protection for individual power sockets; Indicates the first The instantaneous impact of a power socket on electrical equipment; This represents the standard normalization function, used to normalize numerical values ​​to the range (0,1). This represents a preset adjustment coefficient, used to limit the range of values ​​for the overload protection threshold adjustment coefficient. In one specific implementation, .

[0075] In the above formula, when the overload protection threshold adjustment coefficient... When the threshold is too high, the overload protection mechanism may react too quickly, potentially causing more malfunctions. In this case, the threshold needs to be increased to delay overload protection detection and operation. Conversely, a low threshold indicates a sudden and severe surge in current data that causes significant damage to the equipment, while the protection action is delayed. In this situation, the overload protection mechanism needs to respond promptly by lowering the threshold to ensure more timely overload protection triggering.

[0076] Step S400: Based on the overload protection threshold adjustment coefficient, adjust the overload protection threshold of each power socket, and perform power overload protection based on the adjusted overload protection threshold.

[0077] Specifically, based on the overload protection threshold adjustment coefficient determined above, the original overload protection threshold for each power socket is adjusted. This involves determining the product of the overload protection threshold adjustment coefficient and the original overload protection threshold, and using this product as the adjusted overload protection threshold. When each power socket originally has multiple overload protection thresholds, multiple adjusted overload protection thresholds will be obtained. Based on the adjusted overload protection thresholds, a multi-level protection mechanism is configured, with each mechanism corresponding to an adjusted overload protection threshold, such as: Level 1 protection (instantaneous overload protection); Level 2 protection (delayed overload protection); Level 3 protection (overload cut-off protection). Based on the configured multi-level protection mechanism, overload protection is performed for each power socket on the power strip. This involves comparing the real-time monitored current with the adjusted overload protection threshold, and executing corresponding protection actions based on the judgment result, such as issuing an alarm or cutting off the power supply. Additionally, an automatic or manual reset function is designed. After the overload protection is released, the system must perform a self-check to confirm the equipment is safe before restoring power. Meanwhile, overload protection event data are analyzed regularly to evaluate the effectiveness of the protection strategy, and the adjustment coefficients and protection thresholds are dynamically optimized when necessary.

[0078] In the above-mentioned multi-level overload protection method based on current sensing provided in the embodiments of the present invention, by dynamically adjusting the overload protection threshold of each power socket using the overload protection threshold adjustment coefficient, the problems of protection malfunction and untimely protection can be effectively avoided, and reliable multi-level overload protection can be achieved, which effectively improves the safety and reliability of the socket and ensures that the equipment operates in a safe working environment.

[0079] Based on the same inventive concept, embodiments of the present invention also provide a multi-level overload protection socket based on current sensing, such as... Figure 2As shown, the protective socket includes a socket body 3 and an overload protection device. The socket body 3 has multiple sockets 4 (output terminals) and a reset mechanism 5 for restoring power after an overload protection operation. The overload protection device includes a current sensor 2 for collecting current data from each socket 4 in the socket body 3, and a processing unit 1 located within the socket body 3. The processing unit 1 is connected to the current sensor 2 to obtain the monitored current data. The processing unit 1 integrates an overload protection mechanism and can implement any of the aforementioned multi-level overload protection methods based on current sensing. Since this multi-level overload protection method has been described in detail above, it will not be repeated here.

[0080] Based on the same inventive concept, embodiments of the present invention also provide a computer program product, which includes: computer program code, which, when run on a computer, causes the computer to execute any of the aforementioned current sensing-based multi-level overload protection methods.

[0081] Based on the same inventive concept, embodiments of the present invention also provide a computer-readable storage medium storing computer program code, which, when executed on a computer, causes the computer to perform any of the aforementioned current-sensing-based multi-level overload protection methods.

[0082] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A multi-level overload protection method for power consumption based on current sensing, characterized in that, Includes the following steps: Obtain monitoring current data for each power socket in the socket; Based on the changes in the monitoring current data of each power socket, and in combination with the changes in the monitoring current data of other power sockets, the instantaneous impact of each power socket on the electrical equipment is determined. Based on the instantaneous impact, the overload protection threshold adjustment coefficient for each electrical socket is determined; Based on the overload protection threshold adjustment coefficient, the overload protection threshold of each power socket is adjusted, and power overload protection is performed based on the adjusted overload protection threshold.

2. The multi-level overload protection method for power consumption based on current sensing according to claim 1, characterized in that, Determine the instantaneous impact of each electrical outlet on the electrical equipment, including: Based on the slope distribution of each current value in the monitoring current data of each power socket during the current monitoring period, the initial instantaneous impact of each power socket on the electrical equipment is determined. Based on the differences in the monitoring current data of other power sockets between the current monitoring period and previous historical monitoring periods, the impulse correction parameters are determined. The initial instantaneous impact is corrected using impact correction parameters to finally obtain the instantaneous impact of each power socket on the electrical equipment.

3. The multi-level overload protection method for power consumption based on current sensing according to claim 2, characterized in that, Determine the initial transient impact of each electrical outlet on the electrical equipment, including: For each power socket, the slopes of all current values ​​in the monitoring current data during the current monitoring period are classified into two sets to obtain a first slope set and a second slope set. The slopes in the first slope set are greater than the slopes in the second slope set. Based on the distribution level of all slopes in the first slope set, the distribution of all slopes in the first slope set at the corresponding acquisition time in the current monitoring period, and combined with the slope difference between the first slope set and the second slope set, the current burst of each power socket is determined. Based on the proportion of current values ​​exceeding the rated current among all current values ​​corresponding to all slopes in the first slope set, and the proportion of slopes among all slopes in the first slope set in the current monitoring period, the sudden continuity of each power socket in the current monitoring period is determined. Based on the aforementioned current burst and the stated burst duration, the initial instantaneous impact of each power socket on the electrical equipment is determined.

4. The multi-level overload protection method for power consumption based on current sensing according to claim 3, characterized in that, Determine the current bursts for each electrical outlet, including: Based on the distribution level of all slopes in the first slope set, and combined with the distribution level of the time interval between adjacent acquisition times corresponding to the current monitoring period, the current change rate index of each power socket is determined. The current burst of each power socket is determined based on the current change rate index and the magnitude of the slope difference between the first slope set and the second slope set.

5. The multi-level overload protection method for power consumption based on current sensing according to claim 4, characterized in that, Determine the current change rate index for each electrical outlet, including: Determine the average value of all slopes in the first slope set to obtain the first average slope; The average time interval is obtained by determining the average time interval between all adjacent acquisition times corresponding to the first slope set; The current change rate index for each power socket is determined based on the average time interval and the first average slope.

6. The multi-level overload protection method for power consumption based on current sensing according to claim 5, characterized in that, Determine the current bursts for each electrical outlet, including: Determine the average value of all slopes in the second slope set to obtain the second average slope; Determine the difference between the first average slope and the second average slope; Based on the current change rate index and the difference value, the current surge of each power socket during the current monitoring period is determined.

7. The multi-level overload protection method for power consumption based on current sensing according to claim 1, characterized in that, Determine the impact correction parameters, including: Determine the discrete index of the monitoring current data of each other power socket in the current monitoring period and in each of the previous historical monitoring periods; The average difference is determined based on the distribution level of the difference between the discrete index of each other power outlet in the current monitoring period and the discrete index of previous monitoring periods. The average value of the average difference of each of the other power sockets is determined to obtain the impact correction parameter.

8. The multi-level overload protection method for power consumption based on current sensing according to claim 1, characterized in that, Determine the overload protection threshold adjustment factor for each electrical outlet, including: Obtain overload protection data for each electrical socket in the socket; Based on the overload protection data of each electrical socket, the overload protection hysteresis of each electrical socket is determined. Based on the instantaneous impact of each power socket on the electrical equipment and the overload protection hysteresis of each power socket, the overload protection threshold adjustment coefficient of each power socket is determined.

9. The multi-level overload protection method for power consumption based on current sensing according to claim 8, characterized in that, The overload protection related data includes: the trigger time and action time of each overload protection activation, and the trigger current value at each activation; determining the overload protection hysteresis of each electrical outlet, including: Determine the interval between the trigger time and the action time of each overload protection activation; The overload protection hysteresis of each electrical socket is determined based on the difference between the trigger current value and the rated current at the most recent overload protection activation, and the corresponding interval time.

10. A multi-level overload protection socket based on current sensing, characterized in that, The device includes a socket body and an overload protection device. The overload protection device includes a current sensor for collecting current data of each socket in the socket body and a processing unit. The processing unit is connected to the current sensor for sampling and is used to implement the multi-level overload protection method for power consumption based on current sensing as described in any one of claims 1 to 9.

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