Modular design switch socket overload protection optimization system and method

Abstract

The invention relates to the technical field of overload protection, in particular to a modularly-designed switch socket overload protection optimization system and method, and the method comprises the steps: obtaining the lower surface performance of a contact in a power-on state, extracting resistance jump data, recognizing an offset concentration trend, and judging a conduction instability behavior. Analyzing a path action and feedback response difference value to identify the failure of the main path, matching the power-off consistency of the standby path, confirming the continuous circuit cut-off and false triggering exclusion state of the loop, and forming a closed-loop disposal result. Abnormal offset distribution judgment is achieved by recognizing the contact surface state and the resistance jump amplitude, the conduction instability behavior is analyzed and judged in combination with the offset sequence increment trend, path failure is recognized by comparing the main and standby path response time sequence with the feedback difference value, the action response and current interruption matching relation is analyzed, the standby path execution effect is confirmed, and the stability of the circuit is improved. And the power-off closed-loop stability is improved by combining current cut-off and signal state judgment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of overload protection, in particular to a modularly designed switch socket overload protection optimization system and method. BACKGROUND

[0002] The technical field of overload protection includes protection technology against damage risks of electrical equipment during operation due to excessive current, abnormal voltage or line failure. The core content includes current monitoring in the circuit, overload judgment, circuit breaking action triggering and recovery mechanism, mainly realized by means of thermal elements, fuses, electromagnetic circuit breakers and intelligent control units. Overall, the overload protection technology system not only covers the hardware protection structure of electrical components, but also involves electrical circuit design methods, device arrangement methods and their matching relationship with user end electrical appliances, forming a systematic protection technology framework from overload detection to power-off execution.

[0003] Among them, the modularly designed switch socket overload protection optimization system and method refers to the safe control of the circuit in the integrated device of socket and switch through the modular structure combination and overload protection unit configuration. The technical matters covered include the electrical connection method of socket and switch, the configuration method of overload detection circuit and the control method of power-off execution unit. Specifically, the current detection element is used for overload monitoring, the mechanical or electromagnetic execution mechanism is used for cutting operation, and the modular structure is used to realize the combination and installation method optimization of the device.

[0004] The existing technology mainly sets the overload judgment standard according to the current change, does not establish the identification basis for the small fluctuation trend in the contact connection state, is difficult to find the potential conduction instability behavior in time, and the main path response feedback in the power-off execution process only depends on a single trigger signal, which is easily affected by the response delay of the relay to cause the action to be not executed in time, lacks the judgment means of the standby path in the actual response consistency, the confirmation method of the continuous power-off state after power-off is single, ignores the cooperative verification mechanism between current and signal state, causes misjudgment of power-off or mis-triggering of cutting in abnormal conditions, and affects the reliability of the overall verification closed loop. SUMMARY

[0005] The purpose of the present application is to solve the shortcomings in the prior art and to provide a modularly designed switch socket overload protection optimization system and method.

[0006] In order to achieve the above purpose, the present application adopts the following technical scheme: a modularly designed switch socket overload protection optimization system, the system comprises: The contact detection module acquires the surface state of the on-off contact connection end, extracts resistance data during conduction, detects resistance jump amplitude, screens jump positions, judges whether the jump trend is continuous, and if the trend is continuous, generates a contact offset abnormality identifier; The conduction stability analysis module is based on the contact offset abnormality identifier being in a non-stable state, calls on-off action records, extracts offset abnormality times, compares total on-off times, constructs an offset growth sequence, judges whether the growth section exists continuously, and if it exists, generates conduction fluctuation existence confirmation information; The power-off path recognition module is based on the conduction fluctuation existence confirmation information being a fluctuation behavior, extracts main and standby path response records, compares action sequences and interruption time differences, identifies response sequence abnormal sections, judges whether the main path appears delayed or out of order, and if it exists, generates a power-off main path unusable confirmation state; The action response switching module is based on the power-off main path unusable confirmation state being an unusable path, switches the standby path to execute power-off control, compares whether the trigger time and the current interruption time are consistent, judges whether the action process is correct, and if it is consistent, generates a standby path power-off successful execution result.

[0007] As a further scheme of the application, the contact offset abnormality identifier includes resistance mutation frequency, jump position distribution and offset concentration degree, the conduction fluctuation existence confirmation information includes fluctuation trend sequence, amplitude continuous interval and stability fluctuation index, the power-off main path unusable confirmation state includes response delay time, action sequence anomaly and path availability level, and the standby path power-off successful execution result includes action response matching rate, current interruption consistency and control closed loop integrity.

[0008] As a further scheme of the application, the contact detection module includes: The resistance acquisition submodule acquires the surface state of the connection end of the on-off contact of the modular socket under the power-on state, calls the detected connection end conduction state interval data, collects the contact resistance performance value in each continuous conduction period, pairs the resistance value with the corresponding conduction period, establishes the resistance time sequence data under the continuous conduction period, and generates the conduction interval resistance value sequence; The resistance jump recognition submodule is based on the conduction interval resistance value sequence, calculates the jump amplitude between adjacent time points, extracts all time points with a jump amplitude greater than a jump judgment threshold, marks the corresponding jump position and resistance mutation value, and acquires the jump frequency distribution. The offset section screening submodule matches the change trajectory of the resistance value in the time period where the jump position is located according to the jump frequency distribution quantity, extracts a time section where the resistance value is in a non-continuous variation state, screens whether the deviation degree of the resistance value in the time section exceeds an offset determination threshold, and generates an offset abnormal section value interval; The offset trend determination submodule calls the offset abnormal section value interval, analyzes the relative distribution density of the resistance offset value in different time sections in the section, compares the distribution concentration degree of the offset point number between multiple sections, judges whether the distribution trend of the offset point presents a concentration trend, and if the concentration trend is established, determines that the contact connection state is in a non-stable state, and obtains a contact offset abnormality identifier.

[0009] As a further scheme of the present application, the conduction stability analysis module comprises: The offset statistics submodule, based on the case that the contact offset abnormality identifier is in a non-stable state, calls the offset abnormality identifier sequence recorded by the corresponding module in the on-off process, counts the number of occurrences of the offset abnormality identifier in the sequence, pairs the recorded offset number with the module number to generate a mapping table, establishes a module on-off offset number record, and generates an offset record total amount; The offset proportion extraction submodule calls the offset record total amount, obtains the total number of on-off actions of the corresponding module in the same time period, performs division operation on the offset number and the on-off action number of each module, extracts the offset proportion value of each time period, and arranges the offset proportion value in time sequence to obtain an offset proportion change sequence; The fluctuation interval judgment submodule, according to the offset proportion change sequence, performs difference operation on the offset proportion values of each continuous time section in the sequence, extracts an offset proportion increment value sequence, identifies a time section where the continuous increment value is greater than a conduction increment determination threshold, judges whether the length of the continuous exceeding time section exceeds a fluctuation continuity threshold, and if the condition is met, determines that the module has a conduction fluctuation behavior, and obtains conduction fluctuation existence confirmation information.

[0010] As a further scheme of the present application, the power-off path recognition module comprises: The response sequence extraction submodule, based on the result that the conduction fluctuation existence confirmation information is a fluctuation behavior, calls the response behavior sequence of the current detection relay in the main power-off path and the on-off feedback information of the MOS tube power-off component in the standby path, arranges the trigger signals and feedback time points of the relay and the MOS tube in time sequence, establishes a data set of the on-off action trigger time and feedback time of the two paths, and generates a power-off on-off time set; The on-off time difference calculation submodule calls the off on-off time set, calculates the time interval value between the action trigger and the complete current interruption in each path, obtains the trigger time difference and the feedback response difference of the main path and the standby path, screens the data segments in the main path whose response delay is greater than the action delay determination threshold, and obtains the path response delay interval; The path state judgment submodule identifies the action sequence relationship between the main path and the standby path in the corresponding time period according to the path response delay interval, judges whether there is a period in which the feedback response time of the main path is later than the action time of the standby path, screens whether the action out-of-sequence section overlaps with the delay interval, and if so, identifies the main path as an unusable path, and obtains the off main path unusable confirmation state.

[0011] As a further scheme of the application, the action response switching module comprises: The path switching submodule switches the off control behavior in the standby path according to the case that the off main path unusable confirmation state is an unusable path, calls the action trigger time and the loop off response time in the standby path on-off control record, establishes the time correspondence table of the action trigger and the current interruption, and generates the standby path on-off time pair. The trigger correspondence judgment submodule calls the standby path on-off time pair, compares whether the action trigger time and the current interruption time occur at the same time, counts the number of complete correspondence records, calculates the matching proportion of the corresponding number in the total records of the standby path, judges whether the proportion meets the on-off consistent determination condition, and obtains the action response consistency proportion value. The state record confirmation submodule judges whether the proportion is maintained within the specified consistent condition according to the action response consistency proportion value, records the off operation of the standby path as an effective execution behavior if the condition is met, establishes the completion state data of the current module off behavior, and obtains the standby path off successful execution result.

[0012] As a further scheme of the application, the system further comprises: The overload closed loop processing module extracts the current detection record and the power state after the off of the socket based on the standby path off successful execution result as a behavior completion, judges whether the power remains in the off state, analyzes whether the off continuous state is effectively maintained, and generates the module level overload closed loop disposal completion confirmation information if the stable interruption is maintained. The module level overload closed loop disposal completion confirmation information comprises a continuous off state, a false trigger exclusion result and a power isolation stability.

[0013] As a further scheme of the application, the overload closed loop processing module comprises: The signal monitoring submodule calls the power opening identification signal after the power-off action of the current socket module based on the premise that the standby path power-off successful execution result is the behavior completion, extracts the time starting point corresponding to the signal interruption, monitors the signal state change in the subsequent record, judges whether the state recovery or power re-closing feedback appears, and generates a power-off state retention identification if it is continuously in the opening state within the recording period. The current correspondence confirmation submodule calls the current detection record of the socket module after power-off according to the power-off state retention identification, extracts all current values in the time period corresponding to the identification state, judges whether there is any value exceeding the breaking current reference value in the section, and generates a current state continuous breaking judgment result if all data are lower than the value. The power-off closed loop confirmation submodule calls the current state continuous breaking judgment result, detects whether the power-off state identification and the current continuous breaking state are consistent in time sequence, confirms that there is no trigger misdirecting event record in the section, and establishes a current module power-off behavior closed loop state label if both satisfy the power-off continuous stable condition, generates a module level overload closed loop disposal completion confirmation information.

[0014] A modular design switch socket overload protection optimization method, the modular design switch socket overload protection optimization method is executed based on the above-mentioned modular design switch socket overload protection optimization system, comprising the following steps: S1: Obtain the surface infrared imaging data of the contact connection end part under the power-on state of the modular socket, extract the resistance detection data sequence in the continuous conduction period, compare the resistance value difference of adjacent time points to form a jump amplitude sequence, extract the position trajectory of the jump occurrence, calculate the jump position distance and local density, and generate a contact offset abnormality identification; S2: Based on the premise that the contact offset abnormality identification is in a non-stable state, extract the offset abnormality number sequence recorded in multiple on-off periods of the corresponding module, calculate the ratio of the offset number in each period to the total action number, construct a ratio change sequence, detect the continuous increasing section in the sequence, extract the time span of the continuous increasing section, judge whether it exceeds the offset number increase threshold, and generate a conduction fluctuation existence confirmation information; S3: According to the premise that the conduction fluctuation existence confirmation information exists fluctuation behavior, extract the response behavior record of the current detection relay in the main power-off path and the on-off feedback data of the standby path MOS tube, compare the time difference and action sequence between the action trigger and current interruption in the two paths, identify the data section with time difference exceeding limit and sequence abnormality, and generate a power-off main path unusable confirmation state; S4: According to the premise that the main path is not available in the power-off state, the action trigger time and the current interruption time point in the standby path on-off record are called to judge whether they are one-to-one corresponding, the ratio of the number of complete matches to the total number of records is calculated, and the ratio is compared to determine whether it meets the consistency condition, and a standby path power-off successful execution result is generated; S5: Based on the premise that the standby path power-off successful execution result is the behavior completion, the current detection record after the module power-off and the power-off signal change data are extracted, it is judged whether the current state after the power-off action is completed is zero, and it is verified whether the power supply signal is maintained in the off state, and the consistency of the two types of data is maintained in the interval, and the module level overload closed loop disposal completion confirmation information is generated.

[0015] Compared with the prior art, the advantages and positive effects of the present application are that: In the present application, by acquiring the surface state of the contact connecting end and comparing the resistance jump amplitude, an abnormal offset distribution recognition mechanism is established, the increment trend analysis of the offset abnormal sequence is introduced, the unstable conduction behavior is judged, the response time sequence and feedback delay difference of the main and standby paths are compared, the recognition ability of the power-off path failure is enhanced, the consistency analysis of the action response and current interruption time point in the power-off record is performed, the execution effectiveness of the standby path is improved, the current continuous interruption state after power-off and the power supply signal change are cooperatively judged to ensure the closed loop stability of the overload power-off behavior, and the overall scheme improves the dynamic control ability of the contact conduction reliability, power-off path response consistency and power-off behavior closed loop completion state. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The system overall flowchart of the present application.

[0017] Figure 2 The system overall flowchart of the present application.

[0018] Figure 3 The method flowchart of the present application. DETAILED DESCRIPTION

[0019] The technical solutions in the present application will be described below with reference to the drawings.

[0020] In the embodiments of the present application, the words such as "example", "for example" and the like are used to represent as an example, illustration or description. Any embodiment or design scheme described as "example" in the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. In fact, the word "example" is intended to present the concept in a specific way. In addition, in the embodiments of the present application, the meaning expressed by "and / or" can be both, or can be one of the two.

[0021] In the embodiments of the present application, "image" and "picture" can be used interchangeably, and it should be pointed out that the meanings expressed are consistent when the distinction is not emphasized.

[0022] In the embodiments of the present application, sometimes the subscript such as W1 can be written in the form of non-subscript such as W1, and the meanings expressed are consistent when the distinction is not emphasized.

[0023] In order to make the technical problems, technical solutions and advantages to be solved by the present application more clear, the following will be described in detail in conjunction with the drawings and specific embodiments.

[0024] Please refer to Figure 1 The present application provides a technical solution: a modular design of a switch socket overload protection optimization system, the system comprises: The contact detection module obtains the connection end surface state of the on-off contact of the modular socket in the power-on state, retrieves the resistance performance data in the continuous conduction period of the corresponding contact, compares the jump amplitude of the resistance value between adjacent time points, records the number of jump occurrences and the position change track, screens the data section with offset burst points in the resistance curve, analyzes whether the number of offset points appears concentrated distribution, determines whether the offset distribution state exists a centralized trend, if the centralized trend exists, it is confirmed that the contact is in unstable state, and the contact offset abnormality identifier is generated; The conduction stability analysis module, based on the situation that the contact offset abnormality identifier is in unstable state, retrieves the number of occurrences of the offset abnormality identifier recorded by the corresponding module in multiple on-off processes, compares the number with the total on-off action number in the module, calculates the proportion of the offset number and extracts its change sequence, judges whether the time period of continuous incremental change in the sequence exceeds the preset amplitude condition, if the amplitude exists continuously, it is determined that the module has fluctuation behavior, and the conduction fluctuation existence confirmation information is generated; The power-off path identification module, according to the result that the conduction fluctuation existence confirmation information exists fluctuation behavior, retrieves the response behavior sequence of the current detection relay in the main power-off path and the on-off feedback information of the MOS tube power-off component in the standby path, compares the time difference and the action sequence between the two paths from the action trigger to the current interruption, screens the data segments with abnormal sequence or interruption feedback delay, judges whether the main path exists response delay and action out-of-sequence phenomenon, if there is abnormal performance, the main path is identified as an unusable path, and the power-off main path unusable confirmation state is generated; The action response switching module switches the power-off control behavior of the standby path according to the situation that the main path is unavailable, calls the action trigger time and the loop power-off response time in the standby path on-off control record, compares whether the action trigger and the current interruption time point completely correspond, judges whether the matching proportion of the two in all records is maintained within the specified consistent condition, records the power-off behavior completion state if the consistent condition is met, and generates a standby path power-off successful execution result; The overload closed loop processing module generates module level overload closed loop disposal completion confirmation information based on the standby path power-off successful execution result as the premise of behavior completion, calls the current socket module corresponding current detection record and power-off signal after the power-off action, analyzes whether the signal is continuously in the off state after the signal is interrupted, compares whether the signal change and the module current record continuously maintain the off state, judges whether the loop is in a stable power-off state, confirms that the overload power-off process is completed if the power-off is continuously maintained and no false trigger occurs, and generates module level overload closed loop disposal completion confirmation information.

[0025] The contact offset anomaly identification includes resistance mutation frequency, jump position distribution, and offset concentration degree, the conduction fluctuation existence confirmation information includes fluctuation trend sequence, amplitude continuous interval, and stability fluctuation index, the main path power-off unavailable confirmation state includes response delay time, action sequence anomaly, and path availability level, the standby path power-off successful execution result includes action response matching rate, current interruption consistency, and control closed loop integrity, and the module level overload closed loop disposal completion confirmation information includes continuous power-off state, false trigger exclusion result, and power supply isolation stability.

[0026] Please refer to Figure 2 The contact detection module includes: The resistance acquisition submodule acquires the connection end surface state of the on-off contact of the modular socket in the power-on state, calls the detected connection end conduction state interval data, collects the contact resistance performance value in each continuous conduction period, pairs the resistance value and the corresponding conduction period, establishes the resistance time sequence data in the continuous conduction period, and generates the conduction interval resistance value sequence. Based on the connection end surface state of the on-off contact of the modular socket in the power-on state, a specific socket module A01 is called, and the connection end conduction state interval data collected in a continuous power-on time of 10 seconds is obtained. The data is continuously collected by a high-precision micro-ohmmeter with a sampling interval of 10 milliseconds. During the collection process, each sampling time point, such as the 10th millisecond and the 20th millisecond, is paired with the resistance measurement value corresponding to the time point, such as 0.051 ohms at the 10th millisecond and 0.052 ohms at the 20th millisecond. A set of 1000 data pairs is established, which is the resistance time sequence data in the continuous on-off period, and finally the conduction interval resistance value sequence is generated.

[0027] The resistance jump identification submodule calculates the jump amplitude between adjacent time points based on the resistance value sequence of the conduction interval, extracts all time points where the jump amplitude is greater than the jump judgment threshold, marks the corresponding jump position and resistance jump value, and statistically analyzes the distribution of jump positions on the time axis to obtain the jump frequency distribution. Based on the resistance value sequence during the conduction interval, for each time point in the sequence Resistance values ​​(i from 2 to 1000) Adjacent time point resistance value Perform the difference calculation and take its absolute value to obtain the jump amplitude. For example, if the resistance value is 0.054 ohms at 201 milliseconds and 0.052 ohms at 200 milliseconds, the jump amplitude is 0.002 ohms. All calculated jump amplitudes are compared with a jump judgment threshold. This threshold is based on power-on testing of 100 brand-new, unused socket modules of the same model, recording the natural fluctuation of their resistance values ​​over one hour under stable operating conditions, calculating the standard deviation σ of all fluctuation amplitudes, and taking 5 times this standard deviation as the threshold. Specific experimental data shows that the standard deviation σ is 0.001 ohms, therefore the jump judgment... The threshold is 5 × 0.001 = 0.005 ohms. All time points with a jump amplitude greater than 0.005 ohms are extracted. For example, at 5010 milliseconds, the resistance value suddenly changes from 0.053 ohms to 0.060 ohms, with a jump amplitude of 0.007 ohms, which is greater than 0.005 ohms. Therefore, the time point 5010 milliseconds is marked as a jump position, and the jump value of 0.060 ohms is recorded. After completing the calculation for all 1000 data points, the distribution of all marked jump positions on the 0 to 10 second time axis is statistically analyzed, and the jump frequency distribution is finally obtained.

[0028] The offset segment screening submodule matches the resistance value change trajectory within the time period of the jump position based on the jump frequency distribution, extracts the time segment where the resistance value changes discontinuously, screens whether the deviation of the resistance value within the time segment exceeds the offset judgment threshold, and generates an offset abnormal segment value range. According to the jump frequency distribution, for example, it is found that 3 jumps occur in the time period of 4.8-5.2 seconds, and 2 jumps occur in the time period of 7.1-7.3 seconds, so the complete change trajectory of the resistance value in the time period where these jump positions are located, i.e. [4800 milliseconds, 5200 milliseconds] and [7100 milliseconds, 7300 milliseconds], is matched, the time segments of non-continuous variation state of all resistance values greater than the upper limit of normal fluctuation 0.055 ohms in these trajectories are extracted, and the degree of deviation of the resistance value from the reference stable resistance value (taking the mean value of the new sample test 0.050 ohms) in these segments is screened whether it exceeds the deviation judgment threshold, which is set based on the resistivity change characteristics of the material before the critical point of overheating. By experiment, the resistance value is measured when the contact material is heated to 80% of its rated maximum working temperature, and the increase of the resistance value relative to the resistance value at room temperature is measured. The 70% of the increase is set as the threshold value. The increase is 0.035 ohms measured by experiment, so the deviation judgment threshold is 0.035*70%=0.0245 ohms. If the resistance reaches 0.075 ohms at 4.9 seconds, the deviation is 0.075-0.050=0.025 ohms, which is greater than 0.0245 ohms, then the time point and its corresponding resistance value interval [4.9 seconds, 0.075 ohms] are recorded. The specific recorded data is shown in Table 1. Finally, all the intervals that meet the conditions are integrated to generate the offset abnormal segment value interval.

[0029] Table 1: A01 module offset abnormal segment data excerpt table

[0030] Table 1 lists part of the resistance deviation identified in the screening process. By comparing the measured resistance with the reference resistance, the deviation value is obtained, and it is judged whether the deviation value exceeds the deviation judgment threshold of 0.0245 ohms, so as to determine which data points belong to the offset anomaly.

[0031] The offset trend determination sub-module calls the offset abnormal segment value interval, analyzes the relative distribution density of the resistance deviation value in different time periods in the segment, compares the concentration degree of the number of offset points between multiple segments, judges whether the distribution trend of the offset points presents a concentration trend, and if the concentration trend is established, it is determined that the contact connection state is unstable, and the contact offset anomaly identifier is obtained. The relative distribution density of the resistance offset value between different time periods is analyzed. Specifically, the entire 10-second monitoring period is divided into 10 one-second subintervals. The number of offset points appearing in the [4.8 seconds, 5.2 seconds] segment is 3, and the number of offset points appearing in the [7.1 seconds, 7.3 seconds] time segment is 2. The number of offset points appearing in the other eight one-second subintervals is 0. The distribution concentration of the number of offset points between multiple segments is compared, that is, the combined number of offset points of the fifth subinterval (4-5 seconds) and the sixth subinterval (5-6 seconds) is 3, which is compared with the number of offset points of the eighth subinterval (7-8 seconds), which is 2, and with the number of offset points of the other intervals, which is 0. Whether the distribution trend of the offset points presents a concentration trend is determined. The specific standard for determination is: if the number of offset points in a subinterval accounts for more than 50% of the total number of offset points, it is determined that there is a concentration trend. In this example, the total number of offset points is 3+2=5, and the 3 points in the [4.8 seconds, 5.2 seconds] segment mainly fall in the fifth and sixth one-second subintervals, and the number 3 accounts for 60% of the total number 5, which exceeds the determination standard of 50%. Therefore, the concentration trend is established, and it is determined that the contact connection state of the A01 socket module is unstable. Finally, the contact offset abnormality identifier is obtained.

[0032] The conduction stability analysis module includes: The offset statistical submodule, based on the case where the contact offset abnormality identifier is in an unstable state, calls the offset abnormality identifier sequence recorded by the corresponding module during the on-off process, counts the number of occurrences of the offset abnormality identifier in the sequence, and pairs the recorded offset number with the module number to generate a mapping table, establishes a module on-off offset number record, and generates a total offset record amount. Based on the case where the contact offset abnormality identifier is in an unstable state, the offset abnormality identifier sequence recorded by the A01 module during all on-off processes in the last month is called. This sequence records each occurrence of an unstable state event. The total number of occurrences of the offset abnormality identifier in the sequence is counted. For example, in one month, the A01 module performed 2000 on-off actions, of which the system determined that there were 30 unstable states. Therefore, the recorded offset number 30 is paired with the module number A01 to generate a mapping table entry {‘A01’: 30}. This entry is updated to the module on-off offset number record file, and finally a total offset record amount is generated.

[0033] The offset proportion extraction submodule calls the total offset record amount, obtains the total number of on-off actions of the corresponding module in the same period, performs division operation on the offset number and the number of on-off actions of each module, extracts the offset proportion value of each period, and arranges the offset proportion value in time sequence to obtain the offset proportion change sequence. The total number of offset records, i.e. 30 offset records of the A01 module, is called, and the total number of on-off actions recorded by the operation log in the same period, i.e. the last month, is obtained, which is 2000 times. In order to obtain the change sequence of the offset ratio, the observation period of one month is divided into four weeks, and the number of offsets and on-off actions of each week is obtained, as shown in Table 2. The number of offsets and on-off actions of each module in each week is divided to extract the offset ratio value of each week. For example, the offset ratio of the first week is 3 / 500=0.6%, the second week is 5 / 500=1.0%, the third week is 9 / 500=1.8%, and the fourth week is 13 / 500=2.6%. The four calculated offset ratio values are arranged in time sequence [0.6%, 1.0%, 1.8%, 2.6%] to obtain the change sequence of the offset ratio.

[0034] Table 2: Four-week on-off and offset data table of A01 module

[0035] As shown in Table 2, the table lists the total number of on-off actions of A01 module in the continuous four-week time period, and the number of times of offset abnormality identification recorded by the contact detection module in each period.

[0036] The fluctuation interval judgment sub-module performs difference operation on the offset ratio values of each continuous time period in the change sequence of the offset ratio to extract the sequence of offset ratio increment values, identifies the time period with a continuous increment value greater than the conduction increment threshold, judges whether the length of the continuous exceeding time period exceeds the fluctuation continuity threshold, and if the condition is met, it is determined that the module has a conduction fluctuation behavior, and the conduction fluctuation existence confirmation information is obtained. According to the offset ratio change sequence [0.6%, 1.0%, 1.8%, 2.6%], the difference value of the offset ratio value of each continuous time period in the sequence is calculated, and the increment of the second week relative to the first week is 1.0%-0.6%=0.4%, the increment of the third week relative to the second week is 1.8%-1.0%=0.8%, the increment of the fourth week relative to the third week is 2.6%-1.8%=0.8%, the difference values are extracted, and the offset ratio increment value sequence [0.4%, 0.8%, 0.8%] is obtained. Identify the members in the sequence that are greater than the conduction amplitude determination threshold in sequence, which is set to 0.5%. The setting basis is: a large number of similar modules are subjected to aging acceleration experiment, and the offset ratio week increment data in the process from the brand new state to the significant performance decline (resistance value increases by 50%) is counted. The 80th percentile value of all increment data is taken as the threshold, which is 0.5%. In the increment sequence [0.4%, 0.8%, 0.8%], the second and third increment values 0.8% are greater than 0.5%, forming a continuous time period exceeding the threshold. Then judge whether the length (2 periods) of the continuous exceeding time period exceeds the fluctuation continuity threshold, which is set to 1. That is, as long as the increments of two continuous time periods exceed the conduction amplitude determination threshold, the condition is met. In this example, the continuous period is 2, which meets the condition, so it is determined that the A01 module has a conduction fluctuation behavior, and the conduction fluctuation existence confirmation information is finally obtained.

[0037] The power-off path identification module comprises: The response sequence extraction submodule, based on the conduction fluctuation existence confirmation information as the result of the existence of fluctuation behavior, calls the response behavior sequence of the current detection relay in the main power-off path and the on-off feedback information of the MOS tube power-off component in the standby path, arranges the trigger signals and feedback time points of the relay and the MOS tube in time sequence, establishes the on-off action trigger time and feedback time data set of the two paths, and generates the power-off on-off time set. Based on the existence of the on-off fluctuation confirmation information, the system immediately performs a on-off path response test on the A01 module, calls the response behavior sequence of the current detection relay (main path) in series in the main power-off path and the on-off feedback information of the MOS tube power-off component (backup path) in parallel in the backup path, sends the power-off trigger signal at the same time at 0 ms of the test start, and respectively monitors the time point of the relay mechanical contact separation as 15 ms, the time point of the MOS tube gate voltage becoming the cutoff state as 1 ms, and the time point of the loop current completely interrupting as 16 ms under the relay path and 1.1 ms under the MOS tube path. The time points are arranged in time sequence to establish the on-off action trigger time and feedback time data set of the two paths, {trigger time: 0, relay response time: 15, relay interruption time: 16, MOS tube response time: 1, MOS tube interruption time: 1.1}, and finally generate the power-off on-off time set.

[0038] The on-off time difference calculation submodule calls the power-off on-off time set, calculates the time interval value between the action trigger and the complete interruption of the current in each path, obtains the trigger time difference and feedback response difference of the main path and the backup path, screens the data segment with the response delay greater than the action delay determination threshold in the main path, and obtains the path response delay interval. The on-off time difference calculation submodule calls the power-off on-off time set, calculates the time interval value between the action trigger and the complete interruption of the current in each path, obtains the trigger time difference and feedback response difference of the main path and the backup path, screens the data segment with the response delay greater than the action delay determination threshold in the main path, and obtains the path response delay interval.

[0039] The path state judgment submodule identifies the action sequence relationship between the main path and the backup path in the corresponding time period according to the path response delay interval, judges whether there is a period in which the feedback response time of the main path is later than the action time of the backup path, screens whether the action out-of-sequence section overlaps with the delay interval, and if so, identifies the main path as an unusable path, and obtains the power-off main path unusable confirmation state. According to the path response delay interval, for example, the delay interval [0, 18 milliseconds] obtained in the aforementioned another test, the action sequence relationship between the main path and the standby path in this time period is identified, and it is determined whether the feedback response time of the main path, i.e., the 18th millisecond, is later than the action time of the standby path, i.e., the 1.1st millisecond. Here, 18 milliseconds is later than 1.1 milliseconds, the condition is established, and then it is screened whether the action disorder section overlaps with the delay interval determined in the previous step. Since the determination of action disorder is based on the response time data within the delay interval, once the delay interval exists and the main path response time is greater than the standby path response time, they must overlap. Since the response delay (18 milliseconds > 16 milliseconds) and the action disorder (18 milliseconds > 1.1 milliseconds) phenomena exist at the same time, the main path is identified as an unusable path, and the power-off main path unusable confirmation state is finally obtained.

[0040] The action response switching module includes: The path switching submodule switches the execution of the power-off control behavior in the standby path according to the situation that the power-off main path unusable confirmation state is an unusable path, retrieves the action trigger time and loop power-off response time in the standby path on-off control record, establishes a time correspondence table of action trigger and current interruption, and generates a standby path on-off time pair. According to the situation that the power-off main path unusable confirmation state is an unusable path, the system control logic immediately switches, and in all subsequent power-off instructions for the A01 module, the MOS tube power-off control behavior in the standby path is executed, and the on-off control data recorded by the standby path in the last 1000 actual overload protection or tests is retrieved. This data includes the action trigger time and loop power-off response time of each time, for example, {trigger: T_1, response: T'_1}, {trigger: T_2, response: T'_2}…{trigger: T_1000, response: T'_1000}, and these data pairs are established into a time correspondence table, see Table 3 for an excerpt example, to generate a standby path on-off time pair.

[0041] Table 3: A01 module standby path on-off time pair (excerpts) table

[0042] As shown in Table 3, the table excerpts the time records of the standby path (MOS tube) in 4 power-off operations, showing the high-precision correspondence between the action trigger time and the actual loop power-off response time.

[0043] The trigger correspondence judgment submodule calls the backup path on-off time pair, compares whether the action trigger time and the current interruption time occur at the same time item by item, counts the number of complete corresponding records, calculates the matching proportion of the corresponding number in the backup path all records, judges whether the proportion meets the on-off consistent determination condition, and obtains the action response consistency proportion value; The trigger correspondence judgment submodule calls the backup path on-off time pair, compares whether the action trigger time and the current interruption time occur at the same time item by item, counts the number of complete corresponding records, calculates the matching proportion of the corresponding number in the backup path all records, judges whether the proportion meets the on-off consistent determination condition, and obtains the action response consistency proportion value;

[0044] The state record confirmation submodule judges whether the proportion is maintained within the specified consistent condition according to the action response consistency proportion value, and if the condition is met, records that the power-off operation of the backup path is an effective execution behavior, establishes the completion state data of the current module power-off behavior, and obtains the successful execution result of the backup path power-off. According to the action response consistency proportion value 0.998, it is judged whether the proportion is maintained within the specified consistent condition 0.997. Since 0.998>0.997, the condition is met, the power-off operation of the backup path is recorded as an effective execution behavior, and this conclusion is written into the state log of the A01 module together with the current time stamp, the completion state data of the current module power-off behavior is established, and the successful execution result of the backup path power-off is finally obtained.

[0045] The overload closed loop processing module comprises: The signal monitoring submodule calls the power-off action after the power-off signal of the current socket module based on the premise that the backup path power-off successful execution result is a completed behavior, extracts the time starting point corresponding to the signal interruption, monitors the signal state change in the subsequent record, judges whether the feedback of state recovery or power re-closing appears, and generates a power-off state maintaining identifier if the state is continuously open in the record period. Based on the premise that the backup path power-off execution result is the completion of the action, after the system performs a successful power-off operation on the A01 module through the MOS tube, the power-off state retention identifier signal associated with the module power control logic is immediately called. The signal changes from "CLOSED" to "OPEN" at the moment the MOS tube is turned off. The time point when the state changes to "OPEN" is extracted, for example, the timestamp is 1663500000.001 seconds, and the signal state change is continuously monitored at an interval of 100 milliseconds within the 5-second monitoring period thereafter. It is determined whether the signal appears to recover to the "CLOSED" state or re-close feedback in the subsequent 50 records. If the signal remains "OPEN" in the 50 records, a power-off state retention identifier is generated.

[0046] The current correspondence confirmation submodule calls the power-off socket module current detection record according to the power-off state retention identifier, extracts all current values in the time period corresponding to the identifier state, and determines whether there is any abnormal record in which a value exceeds the current cutoff reference value in the section. If all data is below the value, a current state continuous cutoff determination result is generated. According to the power-off state retention identifier, all current values recorded by the current sensor at the A01 module port within the 5-second monitoring period after power-off are called. The time period corresponds to the identifier state. All 50 current readings in the section are extracted. It is determined whether there is any abnormal record in which a value exceeds the current cutoff reference value in the section. The setting of the current cutoff reference value refers to the noise peak value of the current sensor under zero input. The experiment shows that the peak value is 1.2 mA. To provide sufficient fault tolerance space, the reference value is set to 3 times the peak value, i.e. 1.2*3=3.6 mA. If the 50 current readings, for example, [0.5 mA, 0.3 mA, …, 0.8 mA], the maximum value is 0.8 mA, which does not exceed the reference value of 3.6 mA, all data is below the value, and a current state continuous cutoff determination result is finally generated.

[0047] The power-off closed loop confirmation submodule calls the current state continuous cutoff determination result, detects whether the power-off state identifier and the current continuous cutoff state are consistent in time sequence, confirms that there is no trigger misdirected event record in the section, and if both satisfy the power-off continuous stable condition, establishes the current module power-off behavior closed loop state label, and generates the module level overload closed loop disposal completion confirmation information. The current state continuous off determination result is called to detect whether the power off state identifier is always "OPEN" and the current continuous off state is always "YES" in the 5-second period from the time stamp 1663500000.001 seconds to 1663500005.001 seconds, confirming that there is no trigger misdirect-on event record caused by interference factors in the power identifier "OPEN" during the recording time. If both the stable off of the power signal and the continuous off of the loop current are consistent in time and meet the power-off continuous stable condition, a "closed loop" state label is established for the current A01 module power-off behavior, and the completion time is recorded, and finally the module-level overload closed loop disposal completion confirmation information is generated.

[0048] Please refer to Figure 3 A modular design of switch socket overload protection optimization method, comprising the following steps: S1: Obtain the surface infrared imaging data of the connection end of the on contact under the power-on state of the modular socket, extract the resistance detection data sequence in the continuous on period, compare the resistance value difference of adjacent time points to form the jump amplitude sequence, extract the position trajectory of the jump, calculate the jump position distance and local density, and generate the contact offset abnormality identifier; S2: Based on the premise that the contact offset abnormality identifier is in a non-stable state, extract the offset abnormality number sequence recorded in the corresponding module multiple on-off periods, calculate the ratio of the offset number in each period to the total number of actions, construct the ratio change sequence, detect the continuous increasing section in the sequence, extract the time span of the continuous increasing section, and judge whether it exceeds the offset number increase threshold, and generate the on fluctuation existence confirmation information; S3: According to the premise that the on fluctuation existence confirmation information exists fluctuation behavior, extract the response behavior record of the current detection relay in the main power-off path and the on-off feedback data of the backup path MOS tube, compare the time difference and action sequence between the action trigger and current interruption in the two paths, identify the data segment with time difference exceeding limit and sequence abnormality, and generate the main power-off path unusable confirmation state; S4: According to the premise that the main power-off path unusable confirmation state is an unusable path, call the action trigger time and current interruption time point in the backup path on-off record, judge whether they are one-to-one corresponding, calculate the ratio of the number of complete matches to the total number of records, compare whether the ratio meets the consistency condition, and generate the backup path power-off successful execution result; S5: based on the standby path power-off success execution result as the premise of the behavior completion, the extraction module extracts the current detection record after power-off and the power-off signal change data, judges whether the current state after the power-off action is completed is zero or not, and verifies whether the power signal maintains the disconnected state or not, judges in the consistency maintenance interval of the two types of data, and generates the module level overload closed loop treatment completion confirmation information.

[0049] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A modularly designed switch socket overload protection optimization system, characterized by, The system comprises: A contact detection module acquires the surface state of the on-off contact connection end, extracts resistance data during conduction, detects resistance jump amplitude, screens jump positions, judges whether the concentration is continuous, and generates a contact offset abnormality identifier if the concentration jump trend is established; A conduction stability analysis module is based on the contact offset abnormality identifier being in a non-stable state, calls on-off action records, extracts offset abnormality times, compares total on-off times, constructs an offset growth sequence, judges whether the growth section exists continuously, and generates a conduction fluctuation existence confirmation information if it is established; A power-off path identification module is based on the conduction fluctuation existence confirmation information being a fluctuation behavior, extracts main and backup path response records, compares action order and interruption time difference, identifies response order abnormal section, judges whether the main path appears delay or out of order, and generates a power-off main path unusable confirmation state if it exists; An action response switching module is based on the power-off main path unusable confirmation state being an unusable path, switches the standby path to execute power-off control, compares whether the trigger time and the current interruption time are consistent, judges whether the action process is correct, and generates a standby path power-off successful execution result if it is consistent.

2. The modular design of switch socket overload protection optimization system according to claim 1, characterized in that: The contact offset abnormality identifier includes resistance mutation frequency, jump position distribution, and offset concentration degree. The conduction fluctuation existence confirmation information includes fluctuation trend sequence, amplitude continuous interval, and stability fluctuation index. The power-off main path unusable confirmation state includes response delay time, action order abnormality, and path availability level. The standby path power-off successful execution result includes action response matching rate, current interruption consistency, and control closed loop integrity.

3. The modular design of switch socket overload protection optimization system according to claim 1, wherein, The contact detection module comprises: A resistance acquisition submodule acquires the surface state of the connection end of the on-off contact of the modular socket under the power-on state, calls the detected connection end conduction state interval data, collects the contact resistance performance value in each continuous conduction period, pairs the resistance value with the corresponding conduction period, establishes the resistance time sequence data under the continuous conduction period, and generates the conduction interval resistance value sequence; A resistance jump identification submodule is based on the conduction interval resistance value sequence, calculates the jump amplitude between adjacent time points, extracts all time points with a jump amplitude greater than a jump determination threshold, marks the corresponding jump position and resistance mutation value, and acquires the jump frequency distribution amount by counting the distribution of the jump position on the time axis; An offset section screening submodule matches the resistance value change trajectory in the time period where the jump position is located according to the jump frequency distribution amount, extracts the time section where the resistance value appears non-continuous variation, screens whether the resistance value in the time section exceeds the offset determination threshold, and generates the offset abnormal section value interval; An offset trend determination submodule calls the offset abnormal section value interval, analyzes the relative distribution density of the resistance offset value in different time sections in the section, compares the concentration degree of the distribution of the offset points between multiple sections, judges whether the distribution trend of the offset points presents a concentration trend, and determines that the contact connection state is in a non-stable state if the concentration trend is established, and acquires the contact offset abnormality identifier.

4. The modular design of switch socket overload protection optimization system according to claim 1, wherein, The conduction stability analysis module comprises: The offset statistics submodule identifies a case as a non-stable state based on the contact offset anomaly, calls an offset anomaly identification sequence recorded by a corresponding module in a make-break process, counts the number of occurrences of the offset anomaly identification in the sequence, pairs the recorded offset number with the module number to generate a mapping table, establishes a module make-break offset number record, and generates an offset record total amount; The offset proportion extraction submodule calls the offset record total amount, obtains the total number of make-break actions of the corresponding module in the same period, performs division operation on the offset number and the make-break action number of each module, extracts the offset proportion value of each period, and arranges the offset proportion value in time sequence to obtain an offset proportion change sequence; The fluctuation interval judgment submodule performs difference operation on the offset proportion values of each continuous time period in the offset proportion change sequence, extracts an offset proportion increment value sequence, identifies a time period in which the continuous increment value is greater than a conduction increment threshold, judges whether the length of the continuous exceeding time period exceeds a fluctuation continuity threshold, and if the condition is met, it is determined that the module has a conduction fluctuation behavior, and conduction fluctuation existence confirmation information is obtained.

5. The modular design of switch socket overload protection optimization system according to claim 1, wherein, The power-off path recognition module includes: The response sequence extraction submodule, based on the conduction fluctuation existence confirmation information as a result of the existence of fluctuation behavior, calls the response behavior sequence of the current detection relay in the main power-off path and the make-break feedback information of the MOS tube power-off component in the standby path, arranges the trigger signals and feedback time points of the relay and the MOS tube in time sequence, establishes a data set of the make-break action trigger time and feedback time of the two paths, and generates a power-off make-break time set; The make-break time difference calculation submodule calls the power-off make-break time set, calculates the time interval value between the action trigger and the complete interruption of current in each path, obtains the trigger time difference and feedback response difference of the main path and the standby path, screens data segments in which the response delay in the main path is greater than the action delay threshold, and obtains the path response delay interval; The path state judgment submodule, according to the path response delay interval, identifies the action sequence relationship of the main path and the standby path in the corresponding time period, judges whether there is a time period in which the feedback response time of the main path is later than the action time of the standby path, screens whether the action out-of-sequence section overlaps with the delay interval, and if both exist, identifies the main path as an unusable path, and obtains a power-off main path unusable confirmation state.

6. The modular design of switch socket overload protection optimization system according to claim 1, wherein, The action response switching module includes: The path switching submodule, according to the power-off main path unusable confirmation state as an unusable path, switches to execute the power-off control behavior in the standby path, calls the action trigger time and loop power-off response time in the standby path make-break control record, establishes a time correspondence table of action trigger and current interruption, and generates a standby path make-break time pair; The trigger correspondence judgment submodule calls the standby path make-break time pair, compares whether the action trigger time and the current interruption time occur at the same time, counts the number of completely corresponding records, calculates the matching proportion of the corresponding number in the total records of the standby path, judges whether the proportion meets the make-break consistency determination condition, and obtains an action response consistency proportion value; The state record confirmation sub-module judges whether the proportion is maintained within the specified consistent condition according to the action response consistency proportion value, records the power-off operation of the backup path as valid execution behavior if the condition is met, establishes the completion state data of the current module power-off behavior, and obtains the backup path power-off successful execution result.

7. The modular design of switch socket overload protection optimization system according to claim 1, wherein, The system further comprises: The overload closed loop processing module judges whether the power supply remains in the disconnected state, analyzes whether the power-off continuous state is effectively maintained, generates the module level overload closed loop disposal completion confirmation information if the stable interruption is maintained, based on the backup path power-off successful execution result as behavior completion; The module level overload closed loop disposal completion confirmation information comprises the continuous power-off state, the false trigger elimination result, and the power supply isolation stability.

8. The modular design of switch socket overload protection optimization system according to claim 7, characterized in that, The overload closed loop processing module comprises: The signal monitoring sub-module extracts the time starting point corresponding to the signal interruption, monitors the signal state change in the subsequent record, judges whether the feedback of state recovery or power supply re-closing appears, and generates the power supply disconnection state maintenance identifier if the disconnection state is maintained within the record period, based on the premise that the backup path power-off successful execution result is the behavior completion; The current correspondence confirmation sub-module extracts all current values within the time period corresponding to the identifier state, judges whether there is any value exceeding the abnormal record of the off-flow reference current value within the section, generates the current state continuous off-flow judgment result if all data are lower than the value, based on the power supply disconnection state maintenance identifier; The power-off closed loop confirmation sub-module detects whether the power supply disconnection state identifier and the current continuous off-flow state are consistent in time sequence, confirms that there is no trigger misdirect-on event record within the section, establishes the current module power-off behavior closed loop state label if both satisfy the power-off continuous stable condition, and generates the module level overload closed loop disposal completion confirmation information.

9. A modular design of switch socket overload protection optimization method, characterized in that, The method is used for the modularized design switch socket overload protection optimization system in any one of claims 1-8, and comprises the following steps: S1: obtaining the surface infrared imaging data of the on contact connection end part in the modularized socket power-on state, extracting the resistance detection data sequence within the continuous on period, comparing the resistance value difference of adjacent time points to form the jump amplitude sequence, extracting the position trajectory of the jump occurrence, calculating the jump position distance and local density, performing distribution judgment on the density interval, and generating the contact offset abnormal identifier; S2: extracting the offset abnormal number sequence recorded within the multiple on-off periods of the corresponding module based on the premise that the contact offset abnormal identifier is in the unstable state, calculating the proportion of the offset number in the total action number in each period, constructing the proportion change sequence, detecting the continuous increasing section in the sequence, extracting the time span of the continuous increasing section, judging whether it exceeds the offset number increase threshold, and generating the on fluctuation existence confirmation information; S3: Based on the premise that the conduction fluctuation exists as a confirmation information, extract the response behavior record of the current detection relay in the main power failure path and the on / off feedback data of the MOS tube in the backup path, compare the time difference and the sequence of actions between the action trigger and the current interruption in the two paths, identify data segments with excessive time difference and abnormal sequence, and generate a confirmation state that the main power failure path is unavailable. S4: Based on the premise that the main power outage path is unavailable and the current interruption time is confirmed as unavailable, call the action trigger time and current interruption time in the backup path on / off record, determine whether the two correspond one-to-one, calculate the ratio of the number of complete matches to the total number of records in all records, compare whether the ratio meets the consistency condition, and generate the backup path power outage successful execution result. S5: Based on the premise that the backup path power failure is successfully executed, extract the current detection record and power on / off signal change data after the module is powered off, determine whether the current state after the power failure action is completed is continuously zero, and verify whether the power signal is maintained in the disconnected state. Make a judgment within the consistency maintenance interval of the two types of data, and generate module-level overload closed-loop handling completion confirmation information.

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