A performance detection system, method and apparatus for an engine protection element

Abstract

The application discloses a performance detection system, method and equipment for an engine protection element, the detection system comprising a measured element, a signal collector collecting performance parameter signals of the measured element, and a controller receiving and processing the performance parameter signals, the controller outputting the processed performance parameter signals as a measured curve representing electrical performance of the measured element, the controller comprising a processing unit and a storage unit, the storage unit storing a standard curve of electrical performance corresponding to the measured element, the processing unit displaying a qualified state of the measured element on the display according to a comparison processing result of the measured curve and the standard curve, and displaying the measured curve and the standard curve on the display. The detection system provided by the application is scientific and unified in detection mode, convenient to manage, more accurate in detection result, and capable of displaying real-time parameter states in the form of curves to analyze and know reasons for product defects.

Description

Technical Field

[0001] This invention relates to the field of electrical performance testing technology, and in particular to a performance testing system, testing method and testing equipment for engine protection components. Background Technology

[0002] Traditional methods for testing product quality primarily rely on subjective human judgment, including manual observation. These methods suffer from drawbacks such as low efficiency, susceptibility to external factors, and the inability to quantify testing standards. Furthermore, individual differences in perception lead to variations in judgment criteria, potentially resulting in defective products reaching customers and causing negative impacts.

[0003] Therefore, there is an urgent need to propose a new technical solution to address the drawbacks of traditional testing methods, and to propose a more scientific, intuitive product performance testing method that reduces human intervention and can unify testing standards. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a performance testing system for engine protection components, the specific technical solution of which is as follows:

[0005] A performance testing system for engine protection components, comprising:

[0006] The component under test;

[0007] A signal acquisition device is configured to be connected to the device under test to realize the real-time acquisition of the performance parameter signals of the device under test.

[0008] A controller, configured to be connected to the signal acquisition unit, receives the performance parameter signal from the signal acquisition unit, processes the performance parameter signal, and outputs the processed performance parameter signal as a measured curve characterizing the electrical performance of the component under test; and

[0009] An external device configured to be connected to the controller, the external device having a display;

[0010] The signal acquisition device includes a sensor;

[0011] The controller includes a processing unit and a storage unit. The storage unit stores standard curves of electrical performance corresponding to the component under test. The processing unit displays the qualified status of the component under test on the display based on the comparison results of the measured curve and the standard curve, and displays the measured curve and the standard curve on the display.

[0012] Furthermore, in the above technical solution, the tested component includes a protective element installed on the automobile engine to monitor the temperature; when the tested component is placed in a simulated environment, the signal acquisition device monitors the performance parameter signals of the tested component in real time, and the simulated environment is a working environment artificially simulated that is consistent with the actual working environment of the tested component.

[0013] Furthermore, the standard curve has an allowable deviation range. If the measured curve is within the allowable deviation range of the standard curve, the tested component is qualified; if the measured curve is outside the allowable deviation range of the standard curve, the tested component is unqualified.

[0014] Furthermore, the protective element includes a base, a first electrode plate, a second electrode plate, and a disc mounted on the base. The first electrode plate and the second electrode plate are disposed opposite each other, and the disc is disposed between the first electrode plate and the second electrode plate. The surface of the second electrode plate facing the disc is provided with protrusions and conductive contacts, and the surface of the first electrode plate facing the disc is provided with conductive contacts. The conductive contacts on the first electrode plate and the conductive contacts on the second electrode plate abut against each other at low temperatures or separate from each other at high temperatures.

[0015] Furthermore, the disc flips toward the second electrode plate under heating conditions, so that the two conductive contacts separate from each other at the instant one end of the disc contacts the protrusion; the disc returns to its original state of contact with the second electrode plate under cooling conditions, so that the two conductive contacts reconnect.

[0016] Furthermore, the signal acquisition device includes a temperature sensor and a current sensor, the temperature sensor being configured to acquire the temperature signal of the disc in real time, and the current sensor being configured to acquire the current signal of the protection element in real time.

[0017] Furthermore, the controller includes a programmable logic controller (PLC). The temperature signal is processed into a temperature data signal by the PLC and displayed on the display in the form of a continuous temperature curve. Similarly, the current signal is processed into a current data signal by the PLC and displayed on the display in the form of a continuous current curve.

[0018] Furthermore, the programmable logic controller stores a standard current change curve corresponding to the temperature change curve of the protection element. When the temperature value of the protection element reaches a predetermined temperature value, if the current change curve of the protection element is within the allowable deviation range of the standard current change curve, then the electrical performance of the protection element is qualified.

[0019] Furthermore, the measured component includes an electrical component, and the signal acquisition device includes a temperature sensor; the resistor generates heat when energized and pressurized, and the probe of the temperature sensor monitors the temperature signal of the resistor in real time and sends the temperature signal to the controller.

[0020] Furthermore, the controller includes a programmable logic controller (PLC) with multiple functional units. The temperature signal is processed into a temperature value signal by the PLC and displayed on the display as a continuous temperature curve. After the voltage value of the resistor reaches a predetermined voltage value, the measured temperature curve on the display screen is within the allowable deviation range of the standard temperature curve, indicating that the electrical performance of the resistor is qualified.

[0021] Furthermore, the component under test includes a capacitor, and the signal acquisition device includes a current sensor; the capacitor has an operating current when energized and pressurized, and the probe of the current sensor monitors the current signal of the capacitor in real time and sends the current signal to the controller.

[0022] Furthermore, the controller includes a programmable logic controller (PLC) with multiple functional units. The current signal is processed into a current value signal by the PLC and displayed on the display as a continuous current curve. After the capacitor's energizing voltage reaches a predetermined voltage value, the measured current curve on the display screen is within the allowable deviation range of the standard current curve, indicating that the capacitor's electrical performance is qualified.

[0023] Furthermore, the programmable logic controller includes a signal conditioning unit, an analog-to-digital converter (ADC), and a central processing unit (CPU). The signal conditioning unit includes an oscillation filtering module and a detection amplification module. The analog signal representing the performance parameters of the device under test (DUT) emitted from the signal acquisition unit is oscillated and filtered by the oscillation filtering module before being sent to the detection amplification module for signal amplification. The amplified analog signal is converted into a numerical signal representing the performance parameters of the DUT by the ADC. The numerical signal is received and processed by the CPU.

[0024] Furthermore, the central processing unit includes a logic operation module, a clock module, a storage module, a communication module, and an output module. The storage module stores the electrical performance standard curve corresponding to the component under test, as well as the allowable deviation range corresponding to the electrical performance standard curve. The clock module is configured to record the reception time of the analog signal in real time. The communication module is configured to realize information interaction between various functional units within the programmable logic controller, and is also configured to realize information interaction between the information acquisition device and the programmable logic controller.

[0025] Furthermore, the logic operation module is configured to compare the numerical signal with the standard curve within the allowable deviation range, and determine the qualified status of the tested component based on the comparison result. The output module is configured to display the qualified status, the standard curve within the allowable deviation range, and the measured curve of the tested component on the display.

[0026] Furthermore, the analog signals representing the electrical performance parameters of the tested component, which are acquired in real time by the information acquisition device, are processed by the controller into digital signals representing the electrical performance parameters of the tested component, and the digital signals are displayed on the display in the form of continuous waveform curves.

[0027] Based on the above-described performance testing system for engine protection components, the present invention also provides a performance testing method for engine protection components, comprising:

[0028] Provide the component under test, and simulate the electrical performance testing conditions of the component under test based on the actual working conditions of the component under test;

[0029] An information acquisition device is provided to monitor the performance parameter signals of the tested component in real time under electrical performance testing conditions.

[0030] A controller is provided, which stores a standard curve corresponding to the electrical performance of the component under test. The controller performs logical operations on the performance parameter signal and outputs it in the form of a measured electrical performance curve after processing. The controller compares the measured curve with the standard curve and displays the qualified status of the component under test on the display according to the processing result. The measured curve and the standard curve are displayed on the display.

[0031] Furthermore, the tested component includes a protection element installed on the automobile engine for temperature monitoring, and the electrical performance testing conditions of the protection element are simulated according to the working environment of the protection element.

[0032] Furthermore, the information acquisition device includes a temperature sensor and a current sensor. The temperature sensor is configured to acquire the temperature signal of the protection element in real time, and the current sensor is configured to acquire the current signal of the protection element in real time.

[0033] Furthermore, the controller includes a programmable logic controller (PLC). The temperature signal is processed into a temperature data signal by the PLC and displayed on the display in the form of a continuous temperature curve. Similarly, the current signal is processed into a current data signal by the PLC and displayed on the display in the form of a continuous current curve.

[0034] Furthermore, the programmable logic controller stores a standard current change curve corresponding to the temperature change curve of the protection element. When the temperature value of the protection element reaches a predetermined temperature value, if the current change curve of the protection element is within the allowable deviation range of the standard current change curve, then the electrical performance of the protection element is qualified.

[0035] Based on the above-described performance testing system for engine protection components, the present invention also provides a device for testing the performance of engine protection components. This device includes not only the aforementioned performance testing system for engine protection components, but also a testing station. The testing station is configured to house the component under test, and a signal acquisition device is installed on the testing station. The signal acquisition device is connected to a controller.

[0036] Compared with existing technologies, the performance testing system for engine protection components provided by this invention constructs an automated standard testing platform, replacing traditional manual subjective testing. This makes the testing method scientific and unified, easy to manage, and reduces human intervention, human error, and labor costs. It also makes the test results more accurate, and displays the real-time parameter status in the form of curves, which can be used to analyze and understand the causes of product defects.

[0037] Furthermore, traditional testing methods suffer from drawbacks such as low testing efficiency, significant influence from external factors, and inability to quantify testing standards. Moreover, differences in individual perception inevitably lead to variations in judgment standards, resulting in defective products entering the customer's market and causing adverse effects. The monitoring system proposed in this invention can achieve automated testing, efficiently and reliably screen out defective products, reduce wasted manpower and time in the screening process, standardize screening criteria, make the entire testing process more rigorous, reduce the influx of defective products into the market, thereby improving the product testing efficiency of manufacturing enterprises, saving labor costs, and enhancing enterprise competitiveness. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the performance testing system for engine protection components according to one embodiment of the present invention;

[0040] Figure 2 This is a three-dimensional structural schematic diagram of the protective element of the present invention in one embodiment;

[0041] Figure 3 yes Figure 2 An exploded view of the protective element shown.

[0042] Figure 4 When the engine protection element in Example 3 is a qualified product, the arc waveform curve of the protection element when it is heated and disconnected can be seen to be a descending curve;

[0043] Figure 5 When the engine protection component in Example 3 is a qualified product, the arc waveform curve of the component when it is heated and disconnected can be seen to be an upward curve;

[0044] Figure 6 In Example 3, when an engine protection component is defective, the arc waveform curve of the component when it is heated and disconnected is shown to be a descending curve.

[0045] Figure 7 In Example 3, when an engine protection component is defective, the arc waveform curve of the component during cooling and closing is shown to be an upward curve.

[0046] Wherein, 01 represents the component under test;

[0047] 02-Signal Acquisition Unit;

[0048] 03-Programmable Logic Controller, 031-Signal Conditioning Unit, 0311-Oscillation Filtering Module, 0312-Detection Amplification Module, 032-Analog-to-Digital Conversion Unit, 033-Central Processing Unit, 0331-Clock Module, 0332-Logic Operation Module, 0333-Storage Module, 0334-Communication Module, 0335-Output Module;

[0049] 04-External equipment;

[0050] 05-Protective element, 051-Base, 052-First electrode plate, 0521-Conductive contact on the first electrode plate, 053-Second electrode plate, 0531-Protrusion, 0532-Conductive contact on the second electrode plate, 054-Disc. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] The essence of the present invention will be further explained below with reference to the accompanying drawings and embodiments.

[0055] Example 1

[0056] Traditional methods for testing product quality primarily rely on subjective human judgment, including manual observation. This approach suffers from low efficiency, difficulty in standardizing judgment criteria, and lack of quantification, resulting in low testing efficiency and accuracy. To address these issues, this invention provides an electrical performance testing system and method for engine protection components. The aim is to standardize testing criteria, reduce manual intervention, and improve testing efficiency and accuracy through this system and method.

[0057] The electrical performance testing system for engine protection components proposed in this invention is as follows:

[0058] See Figure 1 This is a schematic diagram of the electrical performance testing system described in the invention. Figure 1As can be seen, the testing system includes a tested component 01, a signal acquisition unit 02, a controller, and an external device 04. The tested component 01 is the product to be tested, and the signal acquisition unit 02 is a signal acquisition device that collects performance parameter signals of the tested component 01 in real time. Generally, this signal acquisition unit 02 can be a sensor purchased externally, depending on the type of signal being acquired. The controller needs to be connected to the sensor wirelessly or via a wired connection. The controller receives the performance parameter signals from the signal acquisition unit 02, processes these signals, and outputs the processed performance parameter signals as a measured curve characterizing the electrical performance of the tested component 01. The external device 04 is configured to be connected to the controller and includes a display.

[0059] The most important component in the above technical solution is the controller, which is used to process and output the received signals. Therefore, the implementation of the detection system mainly depends on the analysis and processing of the controller. In one embodiment, the controller may include a processing unit and a storage unit. The storage unit stores standard curves of the electrical performance corresponding to the tested component 01. The processing unit displays the pass / fail status of the tested component 01 on the display based on the comparison results of the measured curve and the standard curve, and displays the measured curve and the standard curve on the display. It can be seen that the controller in the detection provided by the present invention undertakes the function of data analysis and processing. Traditional detection methods do not have unified detection standards, while the detection standards of the controller of the present invention are unified, and its logical operation method for signals is unified, thus solving the problem that the detection standards in existing detection methods cannot be quantified and unified. Furthermore, the controller can display the electrical performance parameters of the tested component as continuous curves. By comparing with the standard curve, the pass / fail status of the product can be directly obtained. The detection method is automated, reducing manual intervention and improving detection efficiency and accuracy.

[0060] In one embodiment, the standard curve described above has an allowable deviation range. If the measured curve is within the allowable deviation range of the standard curve, the tested component 01 is qualified; if the measured curve is outside the allowable deviation range of the standard curve, the tested component 01 is unqualified. Therefore, in the automated testing process, corresponding standard curves and allowable deviation ranges can be set according to different products, and all measured parameters are compared with the same range, ensuring a unified testing standard.

[0061] In one embodiment, the tested component 01 includes a protective element 05 installed on an automotive engine for temperature monitoring. When the tested component is placed in a simulated environment, the signal acquisition unit monitors the performance parameter signals of the tested component in real time. The simulated environment is a simulated working environment consistent with the actual working environment of the tested component. The protective element 05, as a component used in automotive engine assemblies, can monitor temperature and automatically trigger alarms for real-time protection. This detection system primarily simulates actual application scenarios to test whether the component can function normally under extreme conditions. It can also be seen as an early detection of the component's qualification status to prevent defective products from reaching the customer.

[0062] In one embodiment, see Figure 2 , 3 The protective element 05 of the present invention may include a base 051, a first electrode plate 052, a second electrode plate 053 and a disc 054 mounted on the base 051. The first electrode plate 052 and the second electrode plate 053 are disposed opposite to each other. The disc 054 is disposed between the first electrode plate 052 and the second electrode plate 053. The surface of the second electrode plate 053 facing the disc 054 is provided with protrusions 0531 and conductive contacts. The surface of the first electrode plate 052 facing the disc 054 is provided with conductive contacts. The conductive contacts on the first electrode plate 052 and the conductive contacts on the second electrode plate 053 abut against each other at low temperature or separate from each other at high temperature.

[0063] When the disc 054 is heated, the disc 054 flips toward the second electrode plate 053 so that the two conductive contacts separate at the moment one end of the disc 054 comes into contact with the protrusion 0531; when the disc 054 is cooled, the disc 054 returns to its original state from contact with the second electrode plate 053 so that the two conductive contacts come into contact with each other.

[0064] When performing performance testing on the aforementioned protection element 05 using the detection system described in this invention, the signal acquisition unit includes a temperature sensor and a current sensor. The temperature sensor is configured to acquire the temperature signal of the disc 054 in real time, and the current sensor is configured to acquire the current signal of the protection element 05 in real time. Furthermore, the controller includes a programmable logic controller (PLC). The temperature signal is processed into a temperature data signal by the PLC and displayed on the display as a continuous temperature curve. Similarly, the current signal is processed into a current data signal by the PLC and displayed on the display as a continuous current curve.

[0065] The programmable logic controller described in this embodiment stores a standard current change curve corresponding to the temperature change curve of the protection element 05. When the temperature value of the protection element 05 reaches a predetermined temperature value, if the current change curve of the protection element 05 is within the allowable deviation range of the standard current change curve, then the electrical performance of the protection element 05 is qualified.

[0066] Therefore, the detection system described in this invention can automatically detect the performance of the protection element 05.

[0067] As can be seen from the above, the detection system provided by the present invention can detect the qualified status of the protection element by detecting the change in the current of the protection element at the corresponding temperature, and display the detected data in the form of a curve. Based on the curve data, data analysis can be performed to achieve scientific management.

[0068] In one embodiment, see further. Figure 1 The programmable logic controller 03 of the present invention may include a signal conditioning unit 031, an analog-to-digital converter 032, and a central processing unit 033. The signal conditioning unit 031 includes an oscillation filtering module 0311 and a detection amplification module 0312. The analog signal representing the performance parameters of the device under test 01 emitted from the signal acquisition unit 02 is oscillated and filtered by the oscillation filtering module 0311 and then sent to the detection amplification module 0312 for signal amplification. The amplified analog signal is converted into a numerical signal representing the performance parameters of the device under test 01 by the analog-to-digital converter 032. The numerical signal is received and processed by the central processing unit 033.

[0069] In one example, the central processing unit 033 includes a logic operation module 0332, a clock module 0331, a storage module 0333, a communication module 0334, and an output module 0335. The storage module 0333 stores an electrical performance standard curve corresponding to the component under test 01, and an allowable deviation range corresponding to the electrical performance standard curve. The clock module 0331 is configured to record the reception time of the analog signal in real time. The communication module 0334 is configured to realize information interaction between various functional units within the programmable logic controller 03, and is also configured to realize information interaction between the information acquisition device and the programmable logic controller 03.

[0070] In one example, the logic operation module 0332 is configured to numerically compare the numerical signal with the standard curve within the allowable deviation range, and determine the qualified state of the tested component 01 according to the comparison result. The output module 0335 is configured to display the qualified state, the standard curve within the allowable deviation range, and the measured curve of the tested component 01 on the display.

[0071] The detection system provided by the present invention realizes the detection of the qualified state of products through the cooperation of the signal collector and the controller, replaces the traditional manual detection method with low efficiency and low accuracy, and realizes high-efficiency automation of detection.

[0072] Embodiment 2

[0073] In this embodiment, the qualified state of resistance and capacitance components is detected by the performance detection system for engine protection components according to the present invention.

[0074] In one embodiment, the tested component 01 can be a resistor. When the resistor is powered on and pressurized, heat is generated. Therefore, the qualified state of the resistor can be judged by detecting the temperature of the resistor under the pressurized state (involving Ohm's law and Joule's law). At this time, a temperature sensor can be used as the signal collector 02 for real-time monitoring of the resistor temperature.

[0075] The probe of the temperature sensor can be close to the tested resistor. To reduce external interference, it is best to control the environment to be stable and constant, so that the probe of the temperature sensor can real-time monitor the temperature signal of the resistor and send the temperature signal to the controller.

[0076] In one embodiment, the controller can be a programmable logic controller 03 (PLC). In order to enable the controller to have multiple functions of analysis, processing and output, the programmable logic controller 03 has multiple functional units. The temperature signal is processed by the programmable logic controller 03 into a temperature numerical signal and displayed on the display in the form of a continuous temperature curve. When the power-on voltage value of the resistor reaches the predetermined voltage value, if the measured temperature curve on the display screen is within the allowable deviation range of the standard temperature curve, the electrical performance of the resistor is qualified; otherwise, it is unqualified.

[0077] In another embodiment, when the tested component 01 is a capacitor, the capacitor can be powered on and pressurized. When the capacitor is in the working state, it has a working current. The real-time working current of the capacitor under continuous pressurization can be detected. When the voltage value reaches the predetermined voltage value, the qualified state of the capacitor can be judged by the magnitude of the current. Therefore, a current sensor can be used to detect the real-time working current of the capacitor, and the current sensor sends the current signal to the controller in real time, and the controller realizes the analysis and output of the passing current of the capacitor.

[0078] In one embodiment, the controller may be a programmable logic controller (PLC). To realize the analysis, processing, and output functions of the controller, the PLC has multiple functional units. The current signal is processed by the PLC into a current value signal and then displayed on the display in the form of a continuous current curve. After the energizing voltage of the capacitor reaches a predetermined voltage value, if the measured current curve on the display screen is within the allowable deviation range of the standard current curve, then the electrical performance of the capacitor is qualified; otherwise, it is unqualified.

[0079] In one embodiment, the capacitor also generates some heat after being energized, but overheating may be due to excessive current. Therefore, a temperature sensor can also be used to detect the capacitor's temperature, similar to the resistance detection method in Embodiment 1. Thus, when detecting the same type of object, the detection system described in this invention can be adapted according to the detection principle, exhibiting strong system adaptability.

[0080] The tested component and the information acquisition unit in the detection system proposed in this invention are interconnected, as are the detection methods used to detect the tested component. For example, to detect the pass / fail status of a resistor, in addition to the method of using a temperature sensor to detect the resistor's temperature, a current sensor can be used to detect the current flowing through the resistor. Alternatively, the resistance value can be calculated after detecting the current flowing through the resistor using a current sensor. This conversion process can be written into the logic operation program of the controller. Therefore, the specific components of the detection system proposed in this invention can be changed in real time according to the detection principle, making it highly adaptable and feasible.

[0081] Example 3

[0082] The performance testing system and method provided by this invention can also be used in arc detection technology. Arc detection technology is a technique for detecting the electric arc generated by an object at the moment of power on and off. Its practical application varies greatly in different fields. It can be used to test the safety performance of products. For example, under specific environments and conditions, it can test whether products are qualified and screen out products that do not meet safety requirements, thereby improving the product qualification rate. This arc detection technology can achieve good detection results and accomplish the screening objective.

[0083] Applying the electrical performance testing system and method described in this invention to arc detection technology allows the equipment itself to simulate the specific environment for product testing. By detecting the leakage current generated when an arc occurs, the product's qualification can be determined. Furthermore, research into automatic loading and unloading and screening technologies can be conducted to achieve fully automated arc detection operations.

[0084] The mimicry arc detection technology, as the key to the implementation of the solution described in this embodiment, includes: simulating the product testing environment to capture the leakage current (i.e., arc) generated during the entire process of product heating and cooling; converting the generated leakage current into numerical values ​​corresponding to 0-20000 using an analog module (reading accuracy of 0.1ms); and finally, writing a PLC program and using relevant software to visually display the continuously read values ​​through waveform curves. The values ​​and curves read by the PLC can accurately screen out qualified products. (See [link to relevant documentation]). Figure 4-7 In one case, the product may be the protective element mentioned in Example 1.

[0085] The simulated product testing environment described above captures the leakage current generated during the entire process of product disconnection due to heat and closure due to cooling. This is the same method described in the present invention, which involves energizing and pressurizing the tested component and then using a sensor to monitor the signal in real time.

[0086] The aforementioned conversion of the generated leakage current into values ​​corresponding to 0-20000 via the analog module is accomplished by the analog-to-digital conversion unit of the controller described in this invention.

[0087] The above-described process of writing the PLC program and visually displaying the continuously read values ​​through waveform curves using relevant software constitutes the function of the controller described in this invention to analyze, process, and output waveform curves.

[0088] Therefore, the performance testing system and method for engine protection components described in this invention can be used to adapt and improve arc detection technology, and realize automated qualification testing of components.

[0089] In the detection system described in this embodiment, the analog signals characterizing the electrical performance parameters of the tested component, acquired in real time by the sensor, are processed by the controller into digital signals characterizing the electrical performance parameters of the tested component. These digital signals are then displayed on the display as continuous waveform curves. See also... Figures 4 to 7 The curves clearly show the significant differences between qualified and unqualified products in terms of electrical performance, which proves that using electrical performance curves to uniformly evaluate the quality of products is feasible and effective.

[0090] This embodiment provides a performance testing method for engine protection components, the testing method including:

[0091] Provide the component under test, and simulate the electrical performance testing conditions of the component under test based on the actual working conditions of the component under test;

[0092] An information acquisition device is provided to monitor the performance parameter signals of the tested component in real time under electrical performance testing conditions.

[0093] A controller is provided, which stores a standard curve corresponding to the electrical performance of the component under test. The controller performs logical operations on the performance parameter signal and outputs it in the form of a measured electrical performance curve after processing. The controller compares the measured curve with the standard curve and displays the qualified status of the component under test on the display according to the processing result. The measured curve and the standard curve are displayed on the display.

[0094] In one embodiment, the component under test includes a protection element installed on an automobile engine for monitoring temperature, and the electrical performance testing conditions of the protection element are simulated according to the operating environment of the protection element.

[0095] The information acquisition device includes a temperature sensor and a current sensor. The temperature sensor is configured to acquire the temperature signal of the protection element in real time, and the current sensor is configured to acquire the current signal of the protection element in real time.

[0096] The controller includes a programmable logic controller (PLC). The temperature signal is processed into a temperature data signal by the PLC and displayed on the display in the form of a continuous temperature curve. The current signal is also processed into a current data signal by the PLC and displayed on the display in the form of a continuous current curve.

[0097] The programmable logic controller stores a standard current change curve corresponding to the temperature change curve of the protection element. When the temperature value of the protection element reaches a predetermined temperature value, if the current change curve of the protection element is within the allowable deviation range of the standard current change curve, then the electrical performance of the protection element is qualified.

[0098] See also Figure 2 , 3 When using the performance testing method provided by this invention to test the performance of a protection element 05 for an automobile engine, the extreme working environment of the protection element 05 can be simulated by blowing out hot and cold air. During testing, hot air is blown out to the protection element 05, and the disc 054 of the protection element 05 is heated and flipped. The second electrode plate 053 is pushed up by the disc 054. At the moment of pushing up, the conductive contact of the first electrode plate 052 and the conductive contact on the second electrode plate 053 of the qualified protection element 05 will be disconnected synchronously (i.e., disconnected by heat). The current signal of the protection element 05 will change at the moment of disconnection. The current change curve of the qualified protection element 05 at the moment of disconnection is recorded as the standard current change curve, and the standard current change curve and the disconnection temperature are stored in the controller.

[0099] Therefore, the pass / fail status of the protection element 05 can be detected by detecting the actual current change of the protection element 05 at the instant of thermal disconnection. The protection element 05 can be tested using the performance testing system mentioned in Example 1. The actual current change curve of the tested protection element 05 at the standard disconnection temperature is obtained through signal acquisition from temperature and current sensors and signal processing and analysis by the controller. The pass / fail status of the tested protection element 05 can be intuitively seen by comparing the actual curve with the standard curve, and this pass / fail status can be directly displayed on the screen. To further automate production, corresponding processing can be performed on qualified and defective products based on the performance testing results, realizing automatic feeding of good products and automatic recycling of defective products.

[0100] In contrast to the thermal disconnection characteristic of the aforementioned protection element 05, there is a cooling closure. That is, during detection, cold air is blown onto the protection element 05, and the disc 054 of the protection element 05 is cooled and reset. The second electrode 053 loses the support of the disc 054. At the instant the disc 054 resets, the conductive contacts of the first electrode 052 and the conductive contacts on the second electrode 053 of the qualified protection element 05 will instantly and synchronously come into contact and close (i.e., cooling closure). At the instant of closure, the current signal of the protection element 05 will change. The current change curve of the qualified protection element 05 at the instant of closure is recorded as the standard current change curve, and the standard current change curve and the corresponding closure temperature are stored in the controller.

[0101] The signal of the protection element 05 is collected in real time by temperature and current sensors, and the signal is processed and analyzed by the controller to obtain the actual current change curve of the protection element 05 under the standard closing temperature. By comparing the actual curve with the standard curve, the qualified status of the protection element 05 can be seen intuitively, and the qualified status can be directly displayed on the screen. In order to further realize production automation, qualified products and defective products can be processed accordingly based on the performance test results, realizing automatic feeding of good products and automatic recycling of defective products.

[0102] Therefore, the performance testing system and method for engine protection components proposed in this invention can effectively achieve automated testing, unified testing standards, and intuitive display of the causes and degrees of failure.

[0103] Example 4

[0104] The performance testing method for engine protection components provided by this invention can also be used to test the performance of resistors or capacitors.

[0105] In one embodiment, the detection method described above is used to determine whether the resistance is qualified, specifically as follows:

[0106] The component under test 01 is a resistor, so the information acquisition device for detecting the heating temperature of the resistor is a temperature sensor, and the controller is a programmable logic controller 03.

[0107] The electrical performance testing conditions for the resistor are as follows: Voltage is applied to the resistor so that the voltage across the resistor reaches its maximum operating voltage. The temperature sensor monitors the temperature signal of the resistor in real time, and the temperature signal is sent by the temperature sensor to the programmable logic controller 03 for processing to determine the heating status of the resistor under continuous voltage application to the maximum operating voltage. The programmable logic controller 03 converts the temperature signal into a numerical temperature signal and compares the numerical temperature signal with the temperature value within the allowable deviation range of the standard curve. Based on the comparison result, the qualified status of the resistor is output.

[0108] In the above detection method, the analog temperature signal, which characterizes the electrical performance parameters of the tested component 01, acquired in real time by the temperature sensor, is processed by the controller into a digital temperature signal, which is displayed on the display as a continuous waveform curve. The real-time temperature of the resistor can be directly observed on the display, and the controller's processing allows the display to obtain the resistor's pass / fail status information. This method offers high detection efficiency, and the recorded detection results are traceable.

[0109] In another embodiment, the capacitor's qualification can be detected by the above-described detection method, as follows:

[0110] The component under test 01 is a capacitor, so the information acquisition device for detecting the capacitor's operating current is a current sensor, and the controller is a programmable logic controller 03.

[0111] The electrical performance testing conditions for the capacitor are as follows: The capacitor is energized and voltage is applied until the voltage across its terminals reaches the maximum operating voltage. A current sensor monitors the capacitor's current signal in real time, and this signal is sent to the programmable logic controller (PLC) 03 for processing to determine the current flow under the continuously applied maximum operating voltage. The PLC 03 converts the current signal into a numerical current signal and compares it with the current value within the allowable deviation range of a standard curve. Based on the comparison result, it outputs the capacitor's pass / fail status.

[0112] In the above detection method, the analog current signal characterizing the electrical performance parameters of the tested component 01, acquired in real time by the current sensor, is processed by the controller into a digital current signal characterizing the electrical performance parameters of the tested component 01. This digital signal is displayed on the display as a continuous waveform curve. The real-time current of the capacitor can be directly observed on the display, and the capacitor's pass / fail status information can be obtained from the display through the controller's processing. This method offers high detection efficiency, and the recorded detection results are traceable.

[0113] Example 5

[0114] Based on the detection system and detection method provided above, the present invention also provides a device for performance testing of engine protection components. The device includes not only the above-mentioned performance testing system for engine protection components, but also a testing station. The testing station is configured to place the component to be tested. A signal acquisition device is installed on the testing station and is connected to a controller.

[0115] Of course, in order to perform performance testing on automotive engine protection components, the equipment also needs to be equipped with compressed air pipelines to simulate the actual working environment of the protection components. Hot and cold air are transported through the compressed air pipelines. More specifically, the testing station should also be equipped with an isolation enclosure to isolate the tested components from the external environment, and information acquisition devices such as sensors should be placed inside the isolation enclosure.

[0116] Based on the solutions described in the above embodiments, it can be seen that the performance testing system for engine protection components provided by the present invention constructs an automated standard testing platform, replacing the traditional manual subjective testing. This makes the testing method scientific and unified, easy to manage, and reduces human intervention, human error, and labor costs. It also makes the test results more accurate, and the real-time parameter status is displayed in the form of curves, which can be used to analyze and understand the causes of product defects.

[0117] Furthermore, traditional testing methods suffer from drawbacks such as low testing efficiency, significant influence from external factors, and inability to quantify testing standards. Moreover, differences in individual perception inevitably lead to variations in judgment standards, resulting in defective products entering the customer's market and causing adverse effects. The monitoring system proposed in this invention can achieve automated testing, efficiently and reliably screen out defective products, reduce wasted manpower and time in the screening process, standardize screening criteria, make the entire testing process more rigorous, reduce the influx of defective products into the market, thereby improving the product testing efficiency of manufacturing enterprises, saving labor costs, and enhancing enterprise competitiveness.

[0118] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0119] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications and variations to the above embodiments within the scope of the present invention.

Claims

1. A performance testing system for engine protection components, characterized in that, It includes: The element under test includes a protective element installed on an automobile engine for monitoring temperature. A signal acquisition device is configured to be connected to the device under test to realize the real-time acquisition of the performance parameter signals of the device under test. A controller, configured to be connected to the signal acquisition unit, receives the performance parameter signal from the signal acquisition unit, processes the performance parameter signal, and outputs the processed performance parameter signal as a measured curve characterizing the electrical performance of the component under test; the measured curve is the current change curve of the protection element, and... An external device configured to be connected to the controller, the external device having a display; The signal acquisition device includes a sensor; The controller includes a processing unit and a storage unit. The storage unit stores a standard curve of electrical performance corresponding to the component under test. The standard curve is a standard current change curve corresponding to the temperature change curve of the protection component. When the temperature value of the protection component reaches a predetermined temperature value, if the current change curve of the protection component is within the allowable deviation range of the standard current change curve, then the electrical performance of the protection component is qualified. The processing unit displays the qualified status of the component under test on the display based on the comparison processing result of the measured curve and the standard curve, and displays the measured curve and the standard curve on the display. The protective element includes a base, a first electrode plate, a second electrode plate, and a disc mounted on the base. The first electrode plate and the second electrode plate are disposed opposite each other, and the disc is disposed between the first electrode plate and the second electrode plate. The surface of the second electrode plate facing the disc is provided with protrusions and conductive contacts, and the surface of the first electrode plate facing the disc is provided with conductive contacts. The conductive contacts on the first electrode plate and the conductive contacts on the second electrode plate abut against each other at low temperatures or separate from each other at high temperatures. The disc flips toward the second electrode plate when heated, so that the two conductive contacts separate at the instant one end of the disc contacts the protrusion; the disc returns to its original state from contact with the second electrode plate when cooled, so that the two conductive contacts reconnect.

2. The performance testing system for engine protection components according to claim 1, characterized in that, When the component under test is placed in a simulated environment, the signal acquisition device monitors the performance parameter signals of the component under test in real time. The simulated environment is a working environment that is artificially simulated and consistent with the actual working environment of the component under test. The standard curve has an allowable deviation range. If the measured curve is within the allowable deviation range of the standard curve, the tested component is qualified; if the measured curve is outside the allowable deviation range of the standard curve, the tested component is unqualified.

3. The performance testing system for engine protection components according to claim 2, characterized in that, The signal acquisition device includes a temperature sensor and a current sensor. The temperature sensor is configured to acquire the temperature signal of the disc in real time, and the current sensor is configured to acquire the current signal of the protection element in real time. The controller includes a programmable logic controller (PLC). The temperature signal is processed into a temperature data signal by the PLC and displayed on the display in the form of a continuous temperature curve. The current signal is also processed into a current data signal by the PLC and displayed on the display in the form of a continuous current curve. The programmable logic controller stores a standard current change curve corresponding to the temperature change curve of the protection element.

4. The performance testing system for engine protection components according to claim 3, characterized in that, The programmable logic controller includes a signal conditioning unit, an analog-to-digital converter (ADC), and a central processing unit (CPU). The signal conditioning unit includes an oscillation filtering module and a detection amplification module. The analog signal representing the performance parameters of the device under test (DUT) emitted from the signal acquisition unit is oscillated and filtered by the oscillation filtering module before being sent to the detection amplification module for signal amplification. The amplified analog signal is converted into a numerical signal representing the performance parameters of the DUT by the ADC. The numerical signal is received and processed by the CPU. The central processing unit includes a logic operation module, a clock module, a storage module, a communication module, and an output module. The storage module stores the electrical performance standard curve corresponding to the component under test, as well as the allowable deviation range corresponding to the electrical performance standard curve. The clock module is configured to record the reception time of the analog signal in real time. The communication module is configured to realize information interaction between various functional units within the programmable logic controller, and is also configured to realize information interaction between the signal acquisition unit and the programmable logic controller. The logic operation module is configured to compare the numerical signal with the standard curve within the allowable deviation range, and determine the qualified status of the tested component based on the comparison result. The output module is configured to display the qualified status, the standard curve within the allowable deviation range, and the measured curve of the tested component on the display.

5. The performance testing system for engine protection components according to claim 1, characterized in that, The analog signal representing the electrical performance parameters of the component under test, which is acquired in real time by the signal acquisition device, is processed by the controller into a digital signal representing the electrical performance parameters of the component under test, and the digital signal is displayed on the display in the form of a continuous waveform curve.

6. A performance testing method for engine protection components, characterized in that, The method is applied to the performance testing system of the engine protection element according to any one of claims 1-5, and includes: Provide the component under test, and simulate the electrical performance testing conditions of the component under test based on the actual working conditions of the component under test; A signal acquisition device is provided to monitor the performance parameter signals of the component under test in real time under electrical performance testing conditions. A controller is provided, which stores a standard curve corresponding to the electrical performance of the component under test. The controller performs logical operations on the performance parameter signal and outputs it in the form of a measured electrical performance curve after processing. The controller compares the measured curve with the standard curve and displays the qualified status of the component under test on the display according to the processing result. The measured curve and the standard curve are displayed on the display.

7. The performance testing method for engine protection components according to claim 6, characterized in that, The tested component includes a protection component installed on an automobile engine for temperature monitoring, and the electrical performance testing conditions of the protection component are simulated according to the working environment of the protection component. The signal acquisition device includes a temperature sensor and a current sensor. The temperature sensor is configured to acquire the temperature signal of the protection element in real time, and the current sensor is configured to acquire the current signal of the protection element in real time. The controller includes a programmable logic controller (PLC). The temperature signal is processed into a temperature data signal by the PLC and displayed on the display in the form of a continuous temperature curve. The current signal is also processed into a current data signal by the PLC and displayed on the display in the form of a continuous current curve. The programmable logic controller stores a standard current change curve corresponding to the temperature change curve of the protection element. When the temperature value of the protection element reaches a predetermined temperature value, if the current change curve of the protection element is within the allowable deviation range of the standard current change curve, then the electrical performance of the protection element is qualified.

8. A device for testing the performance of engine protection components, characterized in that, It includes the performance testing system for engine protection components as described in any one of claims 1-5, and further includes a testing station configured to house the component under test, and a signal acquisition device installed on the testing station, the signal acquisition device being connected to a controller.

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