System and method for detecting and analyzing pressure resistance of induction cooker

Abstract

The invention belongs to the technical field of induction cooker performance detection and analysis, and particularly discloses an induction cooker pressure resistance detection and analysis system and method. Comprising an induction cooker voltage withstanding 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 withstanding performance analysis module and an induction cooker voltage withstanding performance feedback terminal. According to the invention, the insulation performance qualification index of the induction cooker is analyzed according to the insulation resistance of the induction cooker at each detection time point during each voltage withstanding performance test, the timeliness of potential safety hazard detection of the induction cooker is ensured, and meanwhile, the electrical performance qualification index of the induction cooker is analyzed according to the electrical parameters of the induction cooker during each voltage withstanding performance test, so that the safety hazard detection accuracy is improved. The accuracy and comprehensiveness of pressure resistance detection and analysis of the induction cooker are guaranteed.

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 coil, a magnetic field is generated. The magnetic field produces 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, leakage and other conditions 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 testing and analysis of induction cookers mainly focuses on the parameter analysis on the electrical side, and there are still the following deficiencies: 1. The current pressure resistance performance testing and analysis of induction cookers does not pay enough attention to the insulation performance of induction cookers, which cannot ensure the timeliness of the safety hazard detection of induction cookers, thereby increasing the probability of short circuit hazards in induction cookers, thereby failing to ensure the product quality of induction cookers and the product reliability of induction cookers.

[0004] 2. When currently analyzing the electrical performance of induction cookers, only the leakage current of the induction cooker during each test under the set voltage is considered, and the changes in voltage and current during each test of the induction cooker are not considered. The accuracy of the induction cooker's voltage resistance performance detection and analysis cannot be guaranteed, and the comprehensiveness of the induction cooker's voltage resistance performance detection and analysis cannot be guaranteed, resulting 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 now proposed.

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

[0009] The induction cooker electrical detection layout module is used to layout various electrical leakage detection points before the voltage resistance performance test of the induction cooker under the 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 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.

[0011] 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.

[0012] 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 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 detection cloud platform according to the pressure resistance performance qualification index of the induction cooker.

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

[0015] S2. Insulation performance test of induction cooker: According to the withstand voltage performance test of the induction cooker under the set voltage, the insulation resistance of the induction cooker at each test time point during each withstand voltage performance 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 a 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 electrical performance of induction cooker: Analyze the electrical performance qualification index of induction cooker based on the electrical parameters of the induction cooker during each voltage resistance performance test.

[0020] S7. Analysis of the withstand voltage performance of induction cookers: Analyze the withstand voltage performance qualification index of induction cookers based on the insulation performance qualification index and electrical performance qualification index of induction cookers.

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

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: (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 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, thereby 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.

[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 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 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, thereby 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 according to 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 use 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 accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the connection of each module of the system of the present invention.

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

[0029] Figure 3 It is a schematic diagram of the connection of each step of the method of the present invention. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work 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, and 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 voltage resistance performance test of the induction cooker 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 of the normal operating voltage will be set during the voltage withstand 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 under a set voltage.

[0036] It should be added that the insulation resistance of the induction cooker at each detection time point during each voltage resistance 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, exemplarily, 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 on the insulation resistance change qualification index of the induction cooker during each withstand voltage performance test , It is the voltage resistance test number. .

[0039] Furthermore, the statistical insulation resistance change qualified 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 the induction cooker in each test time group 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 of the induction cooker during a certain withstand voltage performance test 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 will 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 take 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 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 qualified insulation resistance detection time points and the number of detection time points of the induction cooker in each withstand voltage performance test, and then take the ratio of the number of qualified insulation resistance detection time points and the number of detection time points of the induction cooker in each withstand voltage performance test as the qualified insulation resistance ratio of the induction cooker in each withstand voltage performance test, recorded as .

[0049] Q3. The insulation resistance change qualified index and insulation resistance qualified ratio of the induction cooker during each withstand voltage performance test are introduced 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 qualified analysis model is: , and are the weights of the insulation resistance change qualified index and insulation resistance qualified ratio, 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 trend of insulation resistance changes during the test is relatively stable, but it cannot directly indicate whether the insulation resistance meets 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 withstand voltage performance test, thereby breaking the problem of insufficient attention paid to the insulation performance of the induction cooker during the current withstand voltage 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.

[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 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 voltage resistance performance test of the induction cooker under 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 and 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 wiring terminals after the power input line enters the inside of the induction cooker. These wiring terminals 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 wiring terminals to the outer shell.

[0056] Around the heating coil: Electrical leakage detection points are set 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 wires with good insulation performance 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 shell: An electrical leakage detection point is 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, the current may leak to the heat sink. By using an insulating bracket to install the current detection probe near the gap between the heat sink and the internal circuit, the current leaking from the internal circuit to the heat sink is detected. At the same time, electrical leakage detection points are evenly set at different positions of the metal shell.

[0059] Connection line: 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 false connection or poor contact that may lead to inaccurate detection data. At the same time, use twisted pair wires or wires with shielding layers to reduce the impact of external electromagnetic interference on the detection results, thereby preventing the introduction of additional leakage current during the connection process and ensuring the insulation performance of the wire.

[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 between the electrical leakage detection points (such as using a standard current source) 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 withstand voltage 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 performance 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. The current of the secondary winding is measured, and then 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 resistance performance test of the induction cooker is obtained by detection through a voltage resistance tester placed in the induction cooker. The working principle is: while the voltage resistance 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 a sampling resistor connected in series in the loop. After amplification, rectification and other processing, the measured leakage current value is displayed. The acquisition method is: correctly connect the lines of each electrical leakage detection point of the induction cooker to the output end of the voltage resistance tester. After starting the test, the voltage resistance 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 withstand voltage performance test.

[0066] Exemplarily, 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 at each detection time point of the induction cooker during each voltage resistance performance test from the set voltage to obtain the voltage difference at each detection time point of the induction cooker 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 qualified detection time points of the voltage difference of the induction cooker during each withstand voltage performance test, and use the ratio of the qualified voltage index of the induction cooker during each withstand voltage performance test as the ratio of the qualified voltage index of the induction cooker during each withstand voltage performance test, recorded as .

[0071] W2. According to the current of the induction cooker at each detection time point during each withstand voltage performance test, the current qualified index of the induction cooker during each withstand voltage performance test is calculated. .

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

[0073] W2-2. Extract the permissible 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 permissible current range of the induction cooker, so as to respectively construct 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.

[0074] W2-3. Extract the length of the curve segment and the total length of the curve segment between the reference line of the upper limit value of the permissible current interval and the reference line of the lower limit value of the permissible current interval from the current change curve of the induction cooker during each withstand voltage performance test, and record them as and .

[0075] W2-4. Count the qualified current index of the induction cooker during each withstand voltage test , .

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

[0079] W3-3. Calculate the average value 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 calculation result as the leakage current qualified index of the induction cooker during each withstand voltage performance test, recorded as .

[0080] W4. Statistical evaluation of the electrical performance of the induction cooker , , It is the number of withstand voltage test.

[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, thereby improving the timeliness of the discovery of abnormal performance changes 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 are the weights of the insulation performance qualification index and electrical performance qualification index 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 charged, 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 and performance of the induction cooker. For example, voltage fluctuations may affect the stability of the heating power 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; the voltage resistance performance qualification index of the induction cooker is counted according to the insulation performance qualification index and the electrical performance qualification index of the induction cooker, and 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 use stability and safety 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 withstand voltage performance of an induction cooker, the method comprising: S1, a withstand voltage performance test of the induction cooker: setting a withstand voltage performance test of the induction cooker under a set voltage.

[0089] S2. Insulation performance test of induction cooker: According to the withstand voltage performance test of the induction cooker under the set voltage, the insulation resistance of the induction cooker at each test time point during each withstand voltage performance 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 a 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 electrical performance of induction cooker: Analyze the electrical performance qualification index of induction cooker based on the electrical parameters of the induction cooker during each voltage resistance performance test.

[0094] S7. Analysis of the withstand voltage performance of induction cookers: Analyze the withstand voltage performance qualification index of induction cookers based on the insulation performance qualification index and electrical performance qualification index of induction cookers.

[0095] S8. Feedback on the pressure resistance performance of the induction cooker: According to the qualified index of the pressure resistance performance of the induction cooker, corresponding feedback is 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 specific embodiments described 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 shall all fall within the protection scope of the present invention.

Claims

1. An electromagnetic cooker pressure resistance performance detection and analysis system, characterized in that: The system includes: The induction cooker withstand voltage performance test module is used to set the withstand voltage 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 according to 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 according to the insulation resistance of the induction cooker at each detection time point during each withstand voltage performance 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 withstand voltage 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; 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 withstand voltage performance test; The induction cooker withstand voltage performance analysis module is used to analyze the withstand voltage performance qualification index of the induction cooker according to 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 detection cloud platform according to the pressure resistance performance qualification index of the induction cooker.

2. The induction cooker pressure resistance performance detection and analysis system according to claim 1, characterized in that: 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 performance test, the insulation resistance change qualified index of the induction cooker during each withstand voltage performance test is calculated. , It is the voltage resistance test number. ; 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. The insulation resistance change qualified index and insulation resistance qualified ratio of the induction cooker during each withstand voltage performance test are introduced into the insulation performance qualified analysis model to obtain the insulation performance qualified index of the induction cooker, which is recorded as .

3. The induction cooker pressure resistance performance detection and analysis system according to claim 2, characterized in that: The statistical insulation resistance change qualified index of the induction cooker during each withstand voltage performance 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 each detection time group of the induction cooker during each pressure resistance performance test; The insulation resistance of the induction cooker in each test time group during each withstand voltage test 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 detection 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 of the induction cooker during a certain withstand voltage performance test 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 withstand voltage performance 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 withstand voltage performance test is used as the insulation resistance change qualified index of the induction cooker during each withstand voltage performance test, recorded as .

4. The induction cooker pressure resistance performance detection and analysis system according to claim 2, characterized in that: The statistical insulation resistance qualified ratio of the induction cooker during each withstand voltage performance 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 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 is recorded as the insulation resistance qualified detection time point; The number of qualified detection time points and the number of detection time points of the insulation resistance of the induction cooker in each withstand voltage performance test are counted, and then the ratio of the number of qualified detection time points and the number of detection time points of the insulation resistance of the induction cooker in each withstand voltage performance test is used as the insulation resistance qualified ratio of the induction cooker in each withstand voltage performance test, which is recorded as .

5. The induction 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 performance test, the voltage qualification index of the induction cooker during each withstand voltage performance test is calculated. ; W2. According to the current of the induction cooker at each detection time point during each withstand voltage performance test, the current qualified index of the induction cooker during each withstand voltage performance test is calculated. ; W3. According to the leakage current at each detection time point in each electrical leakage detection 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. Statistical evaluation of the electrical performance of the induction cooker , , It is the number of withstand voltage test.

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

7. The induction cooker pressure resistance performance detection and analysis system according to claim 5, characterized in that: The statistical current qualified index of the induction cooker during each withstand voltage performance test includes: With the detection time point as the horizontal axis and the current as the vertical axis, a current change curve of the induction cooker during each withstand voltage performance test is constructed; Extracting the permissible current range of the induction cooker from the induction cooker withstand voltage 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, so as to respectively construct 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; The length of the curve segment and the total length of the curve segment between the reference line of the upper limit value of the permissible current interval and the reference line of the lower limit value of the permissible current interval are extracted from the current change curve of the induction cooker during each withstand voltage performance test, and are recorded as and ; Statistics of the current qualified index of the induction cooker during each voltage resistance test , .

8. The induction cooker pressure resistance performance detection and analysis system according to claim 5, characterized in that: The statistical leakage current qualified index of the induction cooker during each withstand voltage performance test includes: The maximum value is selected from the leakage current at each detection time point in each electrical leakage detection point during each withstand voltage performance test of the induction cooker as the reference leakage current of each electrical leakage detection point during each withstand voltage performance test of the induction cooker; The reference leakage current of each electrical leakage detection point during each withstand voltage performance test of the induction cooker is matched and compared with the leakage current interval corresponding to each set leakage current qualified index, so as to obtain the leakage current qualified 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 calculation result is used as the leakage current qualified index of the induction cooker during each withstand voltage performance test, recorded as .

9. The induction cooker pressure resistance performance detection and analysis system according to claim 2, 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 are the weights of the insulation performance qualification index and electrical performance qualification index respectively. , .

10. A method for detecting and analyzing the pressure resistance performance of an induction cooker, characterized in that: The method includes: S1. Voltage withstand performance test of induction cooker: set the voltage withstand performance test of induction cooker under set voltage; S2. Insulation performance test of induction cooker: According to the withstand voltage performance test of induction cooker under set voltage, the insulation resistance of induction cooker at each test time point during each withstand voltage performance test is tested; S3. Analysis of the insulation performance of the induction cooker: 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; S4. Electrical detection layout of induction cooker: Before the withstand voltage performance test of the induction cooker under the set voltage, various electrical leakage detection points shall be 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 test time point in each electrical leakage test point; S6. Electrical performance analysis of induction cooker: Analyze the electrical performance qualification index of the induction cooker according to the electrical parameters of the induction cooker during each withstand voltage performance test; S7. Analysis of the withstand voltage performance of the induction cooker: Analyze the withstand voltage 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: According to the qualified index of the pressure resistance performance of the induction cooker, corresponding feedback is provided on the induction cooker pressure resistance performance testing cloud platform.

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