A system and method for detecting and analyzing the pressure resistance performance of an induction cooker

Abstract

The present invention belongs to the technical field of induction cooker performance detection and analysis, and specifically discloses a system and method for detecting and analyzing the voltage resistance performance of an induction cooker, including: an induction cooker voltage resistance performance test module, an induction cooker insulation performance detection module, an induction cooker insulation performance analysis module, an induction cooker electrical detection layout module, an induction cooker electrical performance detection module, an induction cooker electrical performance analysis module, an induction cooker voltage resistance performance analysis module and an induction cooker voltage resistance performance feedback terminal; the present invention ensures the timeliness of the detection of safety hazards of the induction cooker by analyzing the insulation performance qualification index of the induction cooker according to the insulation resistance of the induction cooker at each detection time point during each voltage resistance performance test, and at the same time ensures the accuracy of the detection and analysis of the voltage resistance performance of the induction cooker and the comprehensiveness of the detection and analysis of the voltage resistance performance of the induction cooker by analyzing the electrical performance qualification index of the induction cooker according to the electrical parameters of the induction cooker during each voltage resistance performance test.

Description

Technical Field

[0001] The invention belongs to the technical field of induction cooker performance detection and analysis, and relates to an induction cooker pressure resistance performance detection and analysis system and method. Background Art

[0002] An induction cooker is a kitchen appliance that uses the principle of electromagnetic induction to heat food. It is mainly composed of high-frequency induction heating coils, control circuits, panels and other components. When current passes through the coils, a magnetic field is generated. The magnetic field generates eddy currents at the bottom of the pot, which in turn generates heat. The voltage resistance of the induction cooker is directly related to the safety and reliability of the induction cooker. During use, the induction cooker will be subjected to different voltages. If the voltage resistance is poor, insulation breakdown and leakage may occur, which will not only damage the electronic components inside the induction cooker, but also pose a serious threat to the personal safety of the user. Therefore, it is necessary to test and analyze the voltage resistance of the induction cooker.

[0003] The current pressure resistance performance test and analysis of induction cookers mainly focuses on the parameter analysis of the electrical side, and there are still the following deficiencies: 1. The current pressure resistance performance test and analysis of induction cookers does not pay enough attention to the insulation performance of the induction cooker, which cannot ensure the timeliness of the safety hazard detection of the induction cooker, thereby increasing the probability of short circuit hazards in the induction cooker, and thus cannot guarantee the product quality of the induction cooker, and cannot guarantee the product reliability of the induction cooker.

[0004] 2. When currently analyzing the electrical performance of induction cookers, only the leakage current of the induction cooker during each test at the set voltage is considered, without considering the changes in voltage and current during each test. This makes it impossible to guarantee the accuracy of the induction cooker's voltage resistance performance test and analysis, and thus the comprehensiveness of the induction cooker's voltage resistance performance test and analysis. This results in insufficient accuracy in the induction cooker's voltage resistance performance evaluation, and insufficient effectiveness in tracing induction cooker faults. Summary of the Invention

[0005] In view of this, in order to solve the problems raised in the above background technology, a system and method for detecting and analyzing the pressure resistance performance of an induction cooker is proposed.

[0006] The purpose of the present invention can be achieved through the following technical solutions: The present invention provides an induction cooker pressure resistance performance detection and analysis system, including: an induction cooker pressure resistance performance test module, which is used to set the pressure resistance performance test of the induction cooker under a set voltage.

[0007] The induction cooker insulation performance detection module is used to detect the insulation resistance of the induction cooker at each detection time point during each withstand voltage performance test based on the withstand voltage performance test of the induction cooker at a set voltage.

[0008] The induction cooker insulation performance analysis module is used to analyze the insulation performance qualification index of the induction cooker according to the insulation resistance of the induction cooker at each detection time point during each voltage resistance test.

[0009] The induction cooker electrical detection layout module is used to layout various electrical leakage detection points before the induction cooker's voltage resistance performance test at a set voltage.

[0010] The induction cooker electrical performance detection module is used to detect the electrical parameters of the induction cooker during each voltage resistance test, including the voltage and current at each detection time point and the leakage current at each detection time point in each electrical leakage detection point.

[0011] The induction cooker electrical performance analysis module is used to analyze the electrical performance qualification index of the induction cooker based on the electrical parameters of the induction cooker during each voltage resistance performance test.

[0012] The induction cooker voltage resistance performance analysis module is used to analyze the voltage resistance performance qualification index of the induction cooker based on the insulation performance qualification index and electrical performance qualification index of the induction cooker.

[0013] The induction cooker pressure resistance performance feedback terminal is used to provide corresponding feedback on the induction cooker pressure resistance performance testing cloud platform based on the induction cooker's pressure resistance performance qualification index.

[0014] The present invention also provides a method for detecting and analyzing the voltage resistance performance of an induction cooker, comprising: S1, a voltage resistance performance test of the induction cooker: setting a voltage resistance performance test of the induction cooker at a set voltage.

[0015] S2. Induction cooker insulation performance test: Based on the withstand voltage performance test of the induction cooker at the set voltage, the insulation resistance of the induction cooker at each test time point during each withstand voltage test is tested.

[0016] S3. Analysis of the insulation performance of the induction cooker: Analyze the insulation performance qualification index of the induction cooker based on the insulation resistance of the induction cooker at each detection time point during each voltage resistance test.

[0017] S4. Layout of electrical detection for induction cooker: Before testing the withstand voltage performance of the induction cooker at the set voltage, layout of various electrical leakage detection points shall be carried out.

[0018] S5. Electrical performance test of induction cooker: Test the electrical parameters of the induction cooker during each withstand voltage test, including the voltage and current at each test time point and the leakage current at each electrical leakage test point at each test time point.

[0019] S6. Analysis of the electrical performance of the induction cooker: Analyze the electrical performance qualification index of the induction cooker based on the electrical parameters of the induction cooker during each voltage resistance test.

[0020] S7. Analysis of the pressure resistance performance of the induction cooker: Analyze the pressure resistance performance qualification index of the induction cooker based on the insulation performance qualification index and electrical performance qualification index of the induction cooker.

[0021] S8. Feedback on the pressure resistance performance of the induction cooker: Based on the qualified index of the pressure resistance performance of the induction cooker, corresponding feedback will be provided on the induction cooker pressure resistance performance testing cloud platform.

[0022] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention analyzes the insulation performance qualification index of the induction cooker according to the insulation resistance of the induction cooker at each detection time point during each voltage resistance test, thereby breaking the problem of insufficient attention paid to the insulation performance of the induction cooker during the current voltage resistance performance detection and analysis of the induction cooker, ensuring the timeliness of the detection of safety hazards of the induction cooker, and further reducing the probability of subsequent short-circuit hazards of the induction cooker, thereby ensuring the product quality of the induction cooker and the product reliability of the induction cooker.

[0023] (2) The present invention analyzes the electrical performance qualification index of the induction cooker according to the electrical parameters of the induction cooker during each voltage resistance performance test, thereby avoiding the current deficiency of not considering the changes in voltage and current of the induction cooker during each test, ensuring the accuracy of the induction cooker voltage resistance performance detection and analysis, and further ensuring the comprehensiveness of the induction cooker voltage resistance performance detection and analysis, thereby improving the accuracy of the induction cooker voltage resistance performance evaluation and improving the effectiveness of the induction cooker fault tracing.

[0024] (3) The present invention constructs the current change curve of the induction cooker during each voltage resistance performance test and calculates the current qualification index of the induction cooker during each voltage resistance performance test, thereby improving the intuitiveness of the evaluation of the dynamic change of current during the voltage resistance performance test, thereby improving the accuracy of the leakage risk assessment during the voltage resistance test of the induction cooker, and thus improving the timeliness of the discovery of abnormal changes in the performance of the internal components of the induction cooker.

[0025] (4) The present invention calculates the pressure resistance performance qualification index of the induction cooker based on the insulation performance qualification index and electrical performance qualification index of the induction cooker, and comprehensively evaluates the pressure resistance performance qualification index of the induction cooker from multiple dimensions, thereby improving the evaluation accuracy of the pressure resistance performance of the induction cooker, thereby reducing the potential quality problems of the evaluation of a single performance indicator, and at the same time improving the stability and safety of the induction cooker. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic diagram of the connection of various modules of the system of the present invention.

[0028] Figure 2 This is a connection diagram of the insulation performance qualification index analysis steps of the present invention.

[0029] Figure 3 Schematic diagram of the connection of each step of the method of the present invention. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] See also Figure 1 As shown, the present invention provides an induction cooker voltage resistance performance detection and analysis system, which includes: an induction cooker voltage resistance performance test module, an induction cooker insulation performance detection module, an induction cooker insulation performance analysis module, an induction cooker electrical detection layout module, an induction cooker electrical performance detection module, an induction cooker electrical performance analysis module, an induction cooker voltage resistance performance analysis module and an induction cooker voltage resistance performance feedback terminal.

[0032] In the above, the induction cooker insulation performance detection module is respectively connected to the induction cooker voltage resistance performance test module and the induction cooker insulation performance analysis module; the induction cooker electrical performance analysis module is respectively connected to the induction cooker voltage resistance performance test module, the induction cooker electrical detection layout module and the induction cooker electrical performance analysis module; the induction cooker voltage resistance performance analysis module is also respectively connected to the induction cooker insulation performance analysis module, the induction cooker electrical performance analysis module and the induction cooker voltage resistance performance feedback terminal.

[0033] The induction cooker voltage resistance performance test module is used to set the induction cooker voltage resistance performance test under a set voltage.

[0034] It should be added that the set voltage refers to: the normal operating voltage of the induction cooker is generally AC 220V (it may be 110V in some countries or regions), but in the actual use environment, you may encounter grid voltage fluctuations and other situations. To ensure that the induction cooker can still ensure safety under various possible voltage abnormalities, a test voltage that is a certain multiple higher than the normal operating voltage will be set during the voltage resistance performance test. Usually, a safety factor of 1.5-3 times will be considered. For example, if the normal operating voltage is 220V, calculated according to a 2 times safety factor, the set voltage is 440V.

[0035] The induction cooker insulation performance detection module is used to detect the insulation resistance of the induction cooker at each detection time point during each withstand voltage performance test according to the withstand voltage performance test of the induction cooker at a set voltage.

[0036] It should be added that the insulation resistance of the induction cooker at each testing time point during each voltage withstand performance test is obtained by: detecting it through an insulation resistance sensor placed between the induction cooker heating coil and the induction cooker control circuit board, connecting the two probes of the insulation resistance sensor to the output end of the heating coil (usually the lead wire of the coil) and the connection solder joint or pin corresponding to the heating coil on the control circuit board, turning on the power of the insulation resistance sensor, and testing it for 1 minute based on the set voltage of the induction cooker. During the test time, the insulation resistance sensor will collect insulation resistance data at a set sampling frequency (such as 10 times per second). These data will be processed by the microprocessor inside the insulation resistance sensor to remove noise and interference signals. For example, the insulation resistance sensor uses digital filtering technology to smooth the collected data to obtain a more accurate insulation resistance value.

[0037] The induction cooker insulation performance analysis module is used to analyze the insulation performance qualification index of the induction cooker according to the insulation resistance of the induction cooker at each detection time point during each withstand voltage performance test.

[0038] See also Figure 2 As shown, for example, the analysis of the insulation performance qualification index of the induction cooker includes: Q1, according to the insulation resistance of the induction cooker at each detection time point during each withstand voltage performance test, statistics of the insulation resistance change qualification index of the induction cooker during each withstand voltage performance test , For the pressure resistance test number, .

[0039] Furthermore, the statistical insulation resistance change qualification index of the induction cooker during each voltage resistance performance test includes: Q1-1, combining each detection time point of the induction cooker during each voltage resistance performance test with its adjacent next detection time point in pairs to obtain each detection time group of the induction cooker during each voltage resistance performance test.

[0040] Q1-2. The insulation resistance of each test time group of the induction cooker during each withstand voltage test is recorded as and , is the detection time group number, .

[0041] Q1-3. Statistical analysis of the insulation resistance change rate of each test time group during each withstand voltage test of the induction cooker. , .

[0042] Q1-4. Compare the insulation resistance change rate of each detection time group during each withstand voltage performance test of the induction cooker with the set allowable insulation resistance change rate.

[0043] Q1-5. If the insulation resistance change rate of a certain detection time group during a certain withstand voltage performance test of the induction cooker is less than or equal to the set allowable insulation resistance change rate, the detection time group of the induction cooker during the withstand voltage performance test shall be recorded as a qualified insulation resistance change detection time group.

[0044] Q1-6. Count the number of qualified detection time groups and the number of detection time groups for the induction cooker's insulation resistance change during each withstand voltage performance test, and use the ratio of the number of qualified detection time groups and the number of detection time groups for the induction cooker's insulation resistance change during each withstand voltage performance test as the insulation resistance change qualified index for the induction cooker during each withstand voltage performance test, recorded as .

[0045] Q2. According to the insulation resistance of the induction cooker at each test time point during each withstand voltage performance test, the insulation resistance qualified ratio of the induction cooker during each withstand voltage performance test was calculated. .

[0046] Furthermore, the statistical calculation of the insulation resistance qualified ratio of the induction cooker during each withstand voltage performance test includes: Q2-1, comparing the insulation resistance of the induction cooker at each detection time point during each withstand voltage performance test with a set reference allowable insulation resistance range.

[0047] Q2-2. If the insulation resistance of the induction cooker at a certain detection time point during a certain withstand voltage performance test is within the set reference allowable insulation resistance range, the detection time point of the induction cooker during the withstand voltage performance test shall be recorded as the insulation resistance qualified detection time point.

[0048] Q2-3. Count the number of test time points and the number of test time points at which the induction cooker's insulation resistance passes during each withstand voltage test, and then use the ratio of the number of test time points and the number of test time points as the insulation resistance pass ratio for the induction cooker during each withstand voltage test, recorded as .

[0049] Q3. Import the insulation resistance change qualified index and insulation resistance qualified ratio of the induction cooker during each withstand voltage performance test into the insulation performance qualified analysis model to obtain the insulation performance qualified index of the induction cooker, which is recorded as .

[0050] It should be added that the analysis formula of the insulation performance qualification analysis model is: , and The weights of the insulation resistance change qualified index and insulation resistance qualified ratio are set respectively. , .

[0051] It should be added that the insulation resistance qualified ratio is one of the most direct indicators to measure the insulation performance of the induction cooker. Whether the insulation resistance is qualified or not is closely related to the safety of the user. When the insulation resistance is lower than the qualified value, it may cause leakage and increase the risk of electric shock to the user. From a safety perspective, the importance of the insulation resistance qualified ratio is more prominent. For example, some standards stipulate that the insulation resistance of the induction cooker must be greater than a certain value (such as 10MΩ). A high insulation resistance qualified ratio indicates that the induction cooker can meet this safety requirement most of the time and effectively ensure the safety of the user. The insulation resistance change qualified index mainly focuses on the changes in insulation resistance during the test. Although it can reflect the stability of insulation resistance, it is a relatively indirect indicator compared to the insulation resistance qualified ratio. For example, a high insulation resistance change qualified index only indicates that the change trend of insulation resistance during the test is relatively stable, but it cannot directly indicate whether the insulation resistance meets the safety requirements. Therefore, it is set , in order to facilitate analysis, The specific value can be 0.4, The specific value can be 0.6.

[0052] The present invention analyzes the insulation performance qualification index of the induction cooker according to the insulation resistance of the induction cooker at each detection time point during each voltage resistance performance test, thereby breaking the problem of insufficient attention paid to the insulation performance of the induction cooker during the current voltage resistance performance detection and analysis of the induction cooker, ensuring the timeliness of the detection of safety hazards of the induction cooker, and further reducing the probability of subsequent short-circuit hazards in the induction cooker, thereby ensuring the product quality of the induction cooker and the product reliability of the induction cooker.

[0053] The embodiment of the present invention analyzes the electrical performance qualification index of the induction cooker according to the electrical parameters of the induction cooker during each voltage resistance performance test, thereby avoiding the current deficiency of not considering the voltage and current changes of the induction cooker during each test, ensuring the accuracy of the voltage resistance performance detection and analysis of the induction cooker, and further ensuring the comprehensiveness of the voltage resistance performance detection and analysis of the induction cooker, thereby improving the accuracy of the voltage resistance performance evaluation of the induction cooker and improving the effectiveness of the induction cooker fault tracing.

[0054] The induction cooker electrical detection layout module is used to layout various electrical leakage detection points before the induction cooker is subjected to a voltage withstand performance test at a set voltage.

[0055] It should be added that the specific layout process of the electrical leakage detection points is as follows: Determine the detection point location: Power input part: First consider the location of the power plug of the induction cooker, which is the interface for connecting the induction cooker to the external power supply. It is one of the parts most prone to leakage. An electrical leakage detection point is set between the live wire (L) and the neutral wire (N) of the power plug and the outer shell of the induction cooker, and an electrical leakage detection point is also set at the terminal after the power line enters the interior of the induction cooker. These terminal blocks are connected to the internal circuit, and the current is distributed here to various functional modules. The electrical leakage detection point is used to detect the leakage current from the internal terminal block to the outer shell.

[0056] Around the heating coil: Set up electrical leakage detection points near the connection lines between the heating coil and the control circuit board, because these connection lines may also cause current leakage due to insulation damage and other reasons during operation. The electrical leakage detection points can be connected to the current detection equipment with well-insulated wires to detect the leakage current between the connection lines and surrounding metal parts (such as casing, heat sink, etc.).

[0057] Control circuit board area: Set electrical leakage detection points between the pins of the main chips (such as microcontrollers, power control chips, etc.) on the control circuit board and the ground terminal.

[0058] Heat sink and metal casing: Electrical leakage detection points are set between the heat sink and the internal circuit of the induction cooker. The heat sink is usually in close contact with the power components (such as IGBT) to help dissipate heat. However, if there is a problem with the insulation of the component, current may leak to the heat sink. By using an insulating bracket, the current detection probe is installed near the gap between the heat sink and the internal circuit to detect the current leaking from the internal circuit to the heat sink. At the same time, electrical leakage detection points are evenly set at different positions of the metal casing.

[0059] Connection lines: Connect each electrical leakage detection point to the corresponding input port of the leakage current detection equipment through a well-insulated wire. During the connection process, ensure that the wire is firmly connected to avoid inaccurate test data due to false connection or poor contact. At the same time, use twisted pair wires or wires with shielding layers to reduce the impact of external electromagnetic interference on the test results, thereby preventing the introduction of additional leakage current during the connection process and ensuring the insulation performance of the wires.

[0060] Testing and calibration: After completing the layout of electrical leakage detection points and equipment connection, turn on the leakage current detection equipment and perform a connectivity test on the system. You can apply a small known current (such as using a standard current source) between the electrical leakage detection points to check whether the detection equipment can accurately detect this current and whether the connections between the detection points are normal. If the detection equipment cannot correctly display the known current, you need to check whether the connection line is open or short-circuited, and repair it to complete the layout of the electrical leakage detection points.

[0061] The induction cooker electrical performance detection module is used to detect the electrical parameters of the induction cooker during each voltage resistance performance test, including the voltage and current at each detection time point and the leakage current at each detection time point in each electrical leakage detection point.

[0062] It should be added that the voltage at each detection time point during each voltage resistance test of the induction cooker is detected by a voltage sensor installed on the induction cooker.

[0063] It should be added that the current at each detection time point during each voltage withstand performance test of the induction cooker is obtained through detection by a current transformer installed on the induction cooker. Its working principle is: the current transformer is an instrument that converts a large current on the primary side into a small current on the secondary side for measurement based on the principle of electromagnetic induction. When the measured current flows through the primary winding, a corresponding current will be induced in the secondary winding. By measuring the current of the secondary winding, the measured current is calculated based on the transformation ratio of the current transformer (the ratio of the primary winding current to the secondary winding current).

[0064] It should be added that the leakage current at each detection time point in each electrical leakage detection point during each voltage withstand performance test of the induction cooker is obtained by detection through a voltage withstand tester placed in the induction cooker. The working principle is: when the voltage withstand tester outputs high voltage, the internal current detection circuit will detect the current situation in the test loop in real time, and convert the current signal into a voltage signal through the sampling resistor connected in series in the loop. After amplification, rectification and other processing, the measured leakage current value is displayed. The method of obtaining it is: correctly connect the lines of each electrical leakage detection point of the induction cooker to the output end of the voltage withstand tester. After starting the test, the voltage withstand tester can automatically measure and display the leakage current value at each detection time point.

[0065] The induction cooker electrical performance analysis module is used to analyze the electrical performance qualification index of the induction cooker according to the electrical parameters of the induction cooker during each voltage resistance performance test.

[0066] For example, the analysis of the electrical performance qualification index of the induction cooker includes: W1, according to the voltage of the induction cooker at each detection time point during each withstand voltage performance test, calculating the voltage qualification index of the induction cooker during each withstand voltage performance test; .

[0067] Furthermore, the statistical voltage qualification index of the induction cooker during each voltage resistance performance test includes: W1-1, subtracting the voltage of the induction cooker at each detection time point during each voltage resistance performance test from the set voltage to obtain the voltage difference of the induction cooker at each detection time point during each voltage resistance performance test.

[0068] W1-2. Compare the voltage difference at each detection time point during each withstand voltage performance test of the induction cooker with the set allowable voltage difference.

[0069] W1-3. If the voltage difference at a certain detection time point during a certain voltage resistance performance test of the induction cooker is less than or equal to the set allowable voltage difference, the detection time point is recorded as the voltage difference qualified detection time point.

[0070] W1-4. Count the number of time points at which the voltage difference of the induction cooker is qualified during each withstand voltage performance test, and use the ratio of the number of time points to the number of time points as the voltage qualified index of the induction cooker during each withstand voltage performance test, recorded as .

[0071] W2. Calculate the qualified current index of the induction cooker at each withstand voltage performance test based on the current at each detection time point during each withstand voltage performance test. .

[0072] Furthermore, the statistical current qualification index of the induction cooker during each voltage resistance performance test includes: W2-1, using the detection time point as the horizontal coordinate and the current as the vertical coordinate to construct the current change curve of the induction cooker during each voltage resistance performance test.

[0073] W2-2. Extract the allowable current range of the induction cooker from the induction cooker voltage resistance performance detection cloud platform, and then extract the upper limit value and the lower limit value of the allowable current range of the induction cooker, so as to construct the reference line of the upper limit value of the allowable current range and the reference line of the lower limit value of the allowable current range in the current change curve respectively.

[0074] W2-3. Extract the length of the curve segment between the upper limit reference line of the allowable current range and the lower limit reference line of the allowable current range from the current change curve of the induction cooker during each voltage resistance test, and record them as and .

[0075] W2-4. Calculate the current qualification index of the induction cooker during each voltage resistance test , .

[0076] W3. According to the leakage current of each electrical leakage detection point at each detection time point during each withstand voltage performance test of the induction cooker, the leakage current qualified index of the induction cooker during each withstand voltage performance test is calculated. .

[0077] Furthermore, the statistical leakage current qualification index of the induction cooker during each voltage resistance performance test includes: W3-1, screening out the maximum value from the leakage current of each electrical leakage detection point at each detection time point during each voltage resistance performance test of the induction cooker, as the reference leakage current of each electrical leakage detection point during each voltage resistance performance test of the induction cooker.

[0078] W3-2. Match and compare the reference leakage current of each electrical leakage detection point during each withstand voltage performance test of the induction cooker with the leakage current interval corresponding to each set leakage current qualification index to obtain the leakage current qualification index of each electrical leakage detection point during each withstand voltage performance test of the induction cooker.

[0079] W3-3. Calculate the average of the leakage current qualified index of each electrical leakage detection point during each withstand voltage performance test of the induction cooker, and use the calculated result as the leakage current qualified index of the induction cooker during each withstand voltage performance test, recorded as .

[0080] W4. Calculate the electrical performance qualification index of the induction cooker , , The number of withstand voltage tests.

[0081] The embodiment of the present invention constructs a current change curve of the induction cooker during each voltage resistance performance test, and counts the current qualification index of the induction cooker during each voltage resistance performance test, thereby improving the intuitiveness of the evaluation of the dynamic change of current during the voltage resistance performance test, thereby improving the accuracy of the leakage risk assessment during the voltage resistance test of the induction cooker, and thus improving the timeliness of the discovery of abnormal changes in the performance of the internal components of the induction cooker.

[0082] The induction cooker voltage resistance performance analysis module is used to analyze the voltage resistance performance qualification index of the induction cooker according to the insulation performance qualification index and the electrical performance qualification index of the induction cooker.

[0083] Exemplarily, the analysis of the pressure resistance performance qualification index of the induction cooker includes: extracting the insulation performance qualification index of the induction cooker and the electrical performance qualification index of the induction cooker .

[0084] Statistics on the pressure resistance performance qualification index of induction cookers , , and The weights of the insulation performance qualification index and electrical performance qualification index are set respectively. , .

[0085] It should be added that insulation performance is a key factor in ensuring user safety. During the use of the induction cooker, if there is a problem with the insulation, it may cause an electric shock accident. For example, when the insulating material is aged or damaged, the live part of the induction cooker may be connected to the outer shell, making the outer shell live, and good insulation performance can effectively prevent the current from leaking to the outer shell and other non-live parts. Therefore, insulation performance is directly related to the life safety of the user. When evaluating the voltage resistance performance qualification index, the weight of the insulation performance qualification index should be higher to highlight the importance of safety. The electrical performance qualification index mainly involves the stability and rationality of parameters such as voltage, current and leakage current of the induction cooker during operation. These parameters are more related to the working efficiency, performance and other aspects of the induction cooker. For example, voltage fluctuations may affect the heating power stability of the induction cooker, but under the premise of good insulation performance, such fluctuations generally do not cause safety problems. Electrical performance can be regarded as a further performance consideration after ensuring insulation safety, so its weight is relatively small, so it is set , in order to facilitate analysis, The specific value can be 0.6. The specific value can be 0.4.

[0086] The embodiment of the present invention constructs a current change curve of the induction cooker during each voltage resistance performance test, and counts the current qualification index of the induction cooker during each voltage resistance performance test, thereby improving the dynamic change of current in the voltage resistance performance test process. By counting the voltage resistance performance qualification index of the induction cooker according to the insulation performance qualification index and the electrical performance qualification index of the induction cooker, the voltage resistance performance qualification index of the induction cooker is comprehensively evaluated from multiple dimensions, thereby improving the accuracy of the evaluation of the voltage resistance performance of the induction cooker, thereby reducing the potential quality problems of the evaluation of a single performance indicator, and at the same time improving the stability and safety of the use of the induction cooker.

[0087] The induction cooker pressure resistance performance feedback terminal is used to provide corresponding feedback on the induction cooker pressure resistance performance detection cloud platform according to the pressure resistance performance qualification index of the induction cooker.

[0088] See also Figure 3 As shown, the present invention also provides a method for detecting and analyzing the voltage resistance performance of an induction cooker, the method comprising: S1, voltage resistance performance test of the induction cooker: setting a voltage resistance performance test of the induction cooker at a set voltage.

[0089] S2. Induction cooker insulation performance test: Based on the withstand voltage performance test of the induction cooker at the set voltage, the insulation resistance of the induction cooker at each test time point during each withstand voltage test is tested.

[0090] S3. Analysis of the insulation performance of the induction cooker: Analyze the insulation performance qualification index of the induction cooker based on the insulation resistance of the induction cooker at each detection time point during each voltage resistance test.

[0091] S4. Layout of electrical detection for induction cooker: Before testing the withstand voltage performance of the induction cooker at the set voltage, layout of various electrical leakage detection points shall be carried out.

[0092] S5. Electrical performance test of induction cooker: Test the electrical parameters of the induction cooker during each withstand voltage test, including the voltage and current at each test time point and the leakage current at each electrical leakage test point at each test time point.

[0093] S6. Analysis of the electrical performance of the induction cooker: Analyze the electrical performance qualification index of the induction cooker based on the electrical parameters of the induction cooker during each voltage resistance test.

[0094] S7. Analysis of the pressure resistance performance of the induction cooker: Analyze the pressure resistance performance qualification index of the induction cooker based on the insulation performance qualification index and electrical performance qualification index of the induction cooker.

[0095] S8. Feedback on the pressure resistance performance of the induction cooker: Based on the qualified index of the pressure resistance performance of the induction cooker, corresponding feedback will be provided on the induction cooker pressure resistance performance testing cloud platform.

[0096] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they should all fall within the scope of protection of the present invention.

Claims

1. A system for detecting and analyzing the pressure resistance performance of an induction cooker, characterized by: The system includes: The induction cooker voltage resistance performance test module is used to set the voltage resistance performance test of the induction cooker under the set voltage; The induction cooker insulation performance detection module is used to detect the insulation resistance of the induction cooker at each detection time point during each withstand voltage performance test based on the withstand voltage performance test of the induction cooker at a set voltage; The induction cooker insulation performance analysis module is used to analyze the insulation performance qualification index of the induction cooker based on the insulation resistance of the induction cooker at each detection time point during each voltage resistance test; The induction cooker electrical detection layout module is used to layout various electrical leakage detection points before the induction cooker's withstand voltage performance test at a set voltage; The induction cooker electrical performance detection module is used to detect the electrical parameters of the induction cooker during each voltage resistance test, including the voltage and current at each detection time point and the leakage current at each detection time point in each electrical leakage detection point; The induction cooker electrical performance analysis module is used to analyze the electrical performance qualification index of the induction cooker based on the electrical parameters of the induction cooker during each withstand voltage test. Specifically, the voltage, current, and leakage current qualification index of each withstand voltage test are counted, and the electrical performance qualification index is then comprehensively calculated. The induction cooker voltage resistance performance analysis module is used to analyze the voltage resistance performance qualification index of the induction cooker based on the insulation performance qualification index and electrical performance qualification index of the induction cooker; The induction cooker pressure resistance performance feedback terminal is used to provide corresponding feedback on the induction cooker pressure resistance performance testing cloud platform based on the induction cooker's pressure resistance performance qualification index; The analysis of the insulation performance qualification index of the induction cooker includes: Q1. According to the insulation resistance of the induction cooker at each test time point during each withstand voltage test, the insulation resistance change qualified index of the induction cooker during each withstand voltage test is calculated. , The voltage resistance test number is ; Q2. According to the insulation resistance of the induction cooker at each test time point during each withstand voltage performance test, the insulation resistance qualified ratio of the induction cooker during each withstand voltage performance test was calculated. ; Q3. Import the insulation resistance change qualified index and insulation resistance qualified ratio of the induction cooker during each withstand voltage performance test into the insulation performance qualified analysis model to obtain the insulation performance qualified index of the induction cooker, which is recorded as .

2. The electromagnetic cooker pressure resistance performance detection and analysis system according to claim 1, characterized in that: The statistical insulation resistance change qualified index of the induction cooker during each voltage resistance test includes: Combining each detection time point of the induction cooker during each pressure resistance performance test with its next adjacent detection time point in pairs, to obtain detection time groups of the induction cooker during each pressure resistance performance test; The insulation resistance of each test time group during each withstand voltage test of the induction cooker is recorded as and , is the detection time group number, ; Statistics on the insulation resistance change rate of each test time group during each withstand voltage test of the induction cooker , ; Compare the insulation resistance change rate of each test time group during each withstand voltage performance test of the induction cooker with the set allowable insulation resistance change rate; If the insulation resistance change rate of a certain detection time group during a certain withstand voltage performance test of the induction cooker is less than or equal to the set allowable insulation resistance change rate, the detection time group of the induction cooker during the withstand voltage performance test is recorded as a qualified insulation resistance change detection time group; The number of qualified detection time groups and the number of detection time groups of the insulation resistance change of the induction cooker during each voltage resistance test are counted, and the ratio of the number of qualified detection time groups and the number of detection time groups of the insulation resistance change of the induction cooker during each voltage resistance test is used as the qualified index of the insulation resistance change of the induction cooker during each voltage resistance test, which is recorded as .

3. The electromagnetic cooker pressure resistance performance detection and analysis system according to claim 1, characterized in that: The statistical insulation resistance qualified ratio of the induction cooker during each voltage resistance test includes: Compare the insulation resistance of the induction cooker at each test time point during each withstand voltage performance test with the set reference allowable insulation resistance range; If the insulation resistance of the induction cooker at a certain test time point during a certain withstand voltage performance test is within the set reference allowable insulation resistance range, the test time point of the induction cooker during the withstand voltage performance test is recorded as the insulation resistance qualified test time point; The number of qualified insulation resistance detection time points and the number of detection time points of the induction cooker in each voltage resistance test are counted, and then the ratio of the number of qualified insulation resistance detection time points and the number of detection time points in each voltage resistance test of the induction cooker is used as the insulation resistance qualified ratio of the induction cooker in each voltage resistance test, which is recorded as .

4. The electromagnetic cooker pressure resistance performance detection and analysis system according to claim 1, characterized in that: The analysis of the electrical performance qualification index of the induction cooker includes: W1. According to the voltage of the induction cooker at each test time point during each withstand voltage test, the voltage qualification index of the induction cooker during each withstand voltage test is calculated. ; W2. Calculate the qualified current index of the induction cooker at each withstand voltage performance test based on the current at each detection time point during each withstand voltage performance test. ; W3. According to the leakage current of each electrical leakage detection point at each detection time point during each withstand voltage performance test of the induction cooker, the leakage current qualified index of the induction cooker during each withstand voltage performance test is calculated. ; W4. Calculate the electrical performance qualification index of the induction cooker , , The number of withstand voltage tests.

5. The electromagnetic cooker pressure resistance performance detection and analysis system according to claim 4, characterized in that: The statistical voltage qualification index of the induction cooker during each voltage resistance performance test includes: The voltage of the induction cooker at each detection time point during each withstand voltage performance test is subtracted from the set voltage to obtain the voltage difference at each detection time point during each withstand voltage performance test; Compare the voltage difference at each testing time point during each withstand voltage performance test of the induction cooker with the set allowable voltage difference; If the voltage difference at a certain detection time point during a certain voltage resistance performance test of the induction cooker is less than or equal to the set allowable voltage difference, then the detection time point is recorded as the voltage difference qualified detection time point; The number of qualified detection time points of the voltage difference of the induction cooker during each voltage resistance test is counted, and the ratio of the qualified voltage difference to the number of detection time points is used as the voltage qualified index of the induction cooker during each voltage resistance test, which is recorded as .

6. The electromagnetic cooker pressure resistance performance detection and analysis system according to claim 4, characterized in that: The statistical current qualification index of the induction cooker during each voltage resistance test includes: With the detection time point as the horizontal axis and the current as the vertical axis, the current change curve of the induction cooker during each voltage resistance test is constructed; Extracting the permissible current range of the induction cooker from the induction cooker voltage resistance performance detection cloud platform, and then extracting the upper limit value and the lower limit value of the permissible current range of the induction cooker, thereby constructing a reference line for the upper limit value of the permissible current range and a reference line for the lower limit value of the permissible current range in the current change curve respectively; The length of the curve segment between the upper limit reference line of the permissible current range and the lower limit reference line of the permissible current range and the total length of the curve segment are extracted from the current change curve of the induction cooker during each voltage resistance test, and recorded as and ; Statistics of the current qualified index of the induction cooker during each voltage resistance test , .

7. The electromagnetic cooker pressure resistance performance detection and analysis system according to claim 4, characterized in that: The statistical leakage current qualification index of the induction cooker during each voltage resistance test includes: The maximum value is selected from the leakage current at each detection time point of each electrical leakage detection point during each withstand voltage performance test of the induction cooker, and is used as the reference leakage current of each electrical leakage detection point during each withstand voltage performance test of the induction cooker; Match and compare the reference leakage current of each electrical leakage detection point during each withstand voltage performance test of the induction cooker with the leakage current interval corresponding to each set leakage current qualification index, and obtain the leakage current qualification index of each electrical leakage detection point during each withstand voltage performance test of the induction cooker; The leakage current qualified index of each electrical leakage detection point of the induction cooker during each withstand voltage performance test is averaged and the calculated result is used as the leakage current qualified index of the induction cooker during each withstand voltage performance test, which is recorded as .

8. The electromagnetic cooker pressure resistance performance detection and analysis system according to claim 1, characterized in that: The analysis of the pressure resistance performance qualification index of the induction cooker includes: Extract the insulation performance qualification index of the induction cooker and the electrical performance qualification index of the induction cooker ; Statistics on the pressure resistance performance qualification index of induction cookers , , and The weights of the insulation performance qualification index and electrical performance qualification index are set respectively. , .

9. A method for detecting and analyzing the pressure resistance performance of an induction cooker, characterized by: The method includes: S1. Induction cooker voltage resistance test: Set the induction cooker voltage resistance test under the set voltage; S2. Induction Cooker Insulation Performance Test: Based on the withstand voltage performance test of the induction cooker at the set voltage, the insulation resistance of the induction cooker at each test time point during each withstand voltage test is tested; S3. Analysis of the insulation performance of the induction cooker: Analyze the insulation performance qualification index of the induction cooker based on the insulation resistance of the induction cooker at each detection time point during each voltage resistance test; The analysis of the insulation performance qualification index of the induction cooker includes: Q1. According to the insulation resistance of the induction cooker at each test time point during each withstand voltage test, the insulation resistance change qualified index of the induction cooker during each withstand voltage test is calculated. , The voltage resistance test number is ; Q2. According to the insulation resistance of the induction cooker at each test time point during each withstand voltage performance test, the insulation resistance qualified ratio of the induction cooker during each withstand voltage performance test was calculated. ; Q3. Import the insulation resistance change qualified index and insulation resistance qualified ratio of the induction cooker during each withstand voltage performance test into the insulation performance qualified analysis model to obtain the insulation performance qualified index of the induction cooker, which is recorded as ; S4. Electrical detection layout of induction cooker: Before the pressure resistance performance test of the induction cooker under the set voltage, various electrical leakage detection points are arranged; S5. Electrical performance test of the induction cooker: Test the electrical parameters of the induction cooker during each withstand voltage test, including the voltage and current at each test time point, and the leakage current at each electrical leakage test point; S6. Electrical performance analysis of the induction cooker: Analyze the electrical performance qualification index of the induction cooker based on the electrical parameters of the induction cooker during each withstand voltage test. Specifically, calculate the voltage, current, and leakage current qualification index of each withstand voltage test, and then comprehensively calculate the electrical performance qualification index. S7. Analysis of the pressure resistance performance of the induction cooker: Analyze the pressure resistance performance qualification index of the induction cooker based on the insulation performance qualification index and electrical performance qualification index of the induction cooker; S8. Feedback on the pressure resistance performance of the induction cooker: Based on the qualified index of the pressure resistance performance of the induction cooker, corresponding feedback will be provided on the induction cooker pressure resistance performance testing cloud platform.

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