Vehicle brake fluid effectiveness detection method and device

Abstract

The invention relates to the technical field of detection, in particular to a vehicle brake fluid effectiveness detection method and device.The method comprises the steps that a brake fluid sample of a target vehicle is collected to extract a plurality of original detection indexes of the brake fluid sample; acquiring environment information of a collection point of the brake fluid sample, and correcting the plurality of original inspection indexes according to the environment information to obtain a plurality of corrected inspection indexes; and generating an effectiveness evaluation result of the brake fluid sample in combination with the plurality of test indexes and the target evaluation criterion. Therefore, the problems that in the prior art, a brake fluid detection method is usually complex in operation and possibly cannot accurately reflect the actual performance of the brake fluid in real time, a user cannot be timely reminded that the brake fluid has problems, the safety and the brake performance of a vehicle brake system are difficult to guarantee, and a vehicle has certain potential safety hazards are solved.

Description

Technical Field

[0001] This application relates to the field of testing technology, and in particular to a method and apparatus for testing the effectiveness of vehicle brake fluid. Background Technology

[0002] Brake fluid is a crucial component of a vehicle's braking system, its function being to transmit braking force hydraulically and ensure the system's proper operation. Over time, brake fluid is affected by factors such as heat, moisture, and impurities, leading to a decline in its performance. Excessive moisture absorption, contamination, or changes in chemical composition can all affect the effectiveness of brake fluid, thereby threatening the vehicle's braking performance. Therefore, timely and effective monitoring of brake fluid performance changes is essential for ensuring driving safety.

[0003] In related technologies, brake fluid testing methods mostly rely on traditional manual testing methods, such as observing the color change of the brake fluid, or testing the boiling point and water content of the brake fluid using professional tools.

[0004] However, the brake fluid testing methods in related technologies are usually complex to operate and may not accurately reflect the actual performance of the brake fluid in real time. This can easily lead to the inability to promptly remind users of brake fluid problems, making it difficult to ensure the safety and braking performance of the vehicle's braking system. This poses certain safety hazards to the vehicle and urgently needs to be addressed. Summary of the Invention

[0005] This application provides a method and apparatus for testing the effectiveness of vehicle brake fluid, in order to solve the problems that the brake fluid testing methods in the related art are usually complicated to operate and may not be able to accurately reflect the actual performance of the brake fluid in real time. This can easily lead to the inability to promptly remind users of brake fluid problems, making it difficult to ensure the safety and braking performance of the vehicle braking system, and posing certain safety hazards to the vehicle.

[0006] The first aspect of this application provides a method for testing the effectiveness of vehicle brake fluid, comprising the following steps: collecting brake fluid samples from a target vehicle to extract multiple original test indicators from the brake fluid samples; obtaining environmental information of the collection point of the brake fluid samples to correct the multiple original test indicators based on the environmental information, thereby obtaining corrected multiple test indicators; and combining the multiple test indicators and target evaluation criteria to generate an effectiveness evaluation result for the brake fluid samples.

[0007] Optionally, in one embodiment of this application, the extraction of multiple original test indicators of the brake fluid sample includes: extracting the boiling point, water content, pH value, metal debris content, viscosity, and other oil content besides brake fluid from the brake fluid sample; and determining the multiple original test indicators based on the boiling point, water content, pH value, metal debris content, viscosity, and other oil content besides brake fluid.

[0008] Optionally, in one embodiment of this application, obtaining environmental information of the sampling point of the brake fluid sample to correct the plurality of original test indicators based on the environmental information includes: obtaining the environmental humidity and / or environmental temperature of the sampling point; and correcting the plurality of original test indicators based on the correlation characteristics between the environmental humidity and / or the environmental temperature and the plurality of original test indicators.

[0009] Optionally, in one embodiment of this application, the step of generating the effectiveness evaluation result of the brake fluid sample by combining the multiple inspection indicators and target analysis criteria includes: generating an effectiveness evaluation result for each inspection indicator based on the multiple inspection indicators and their corresponding effectiveness ranges, so as to determine the effectiveness evaluation result of the brake fluid sample based on each inspection indicator and its effectiveness evaluation result; and / or, generating an evaluation value for each inspection indicator by combining the multiple inspection indicators and their corresponding effectiveness ranges, so as to determine the effectiveness evaluation result of the brake fluid sample by combining the evaluation value of each inspection indicator and its corresponding weight.

[0010] Optionally, in one embodiment of this application, the method further includes: collecting historical test indicators of the brake fluid in which the brake fluid sample is located; analyzing the changing patterns of the multiple test indicators based on the historical test indicators; and generating a brake fluid effectiveness indicator for the target vehicle based on the multiple test indicators and their corresponding changing patterns.

[0011] A second aspect of this application provides a device for testing the effectiveness of vehicle brake fluid, comprising: an extraction module for collecting brake fluid samples from a target vehicle to extract multiple original test indicators from the brake fluid samples; a correction module for acquiring environmental information of the collection point of the brake fluid samples to correct the multiple original test indicators based on the environmental information, thereby obtaining corrected multiple test indicators; and a generation module for combining the multiple test indicators and target evaluation criteria to generate an effectiveness evaluation result for the brake fluid samples.

[0012] Optionally, in one embodiment of this application, the extraction module includes: an extraction unit for extracting the boiling point, moisture content, pH value, metal debris content, viscosity, and other oil content besides brake fluid from the brake fluid sample; and a determination unit for determining the plurality of original test indicators based on the boiling point, moisture content, pH value, metal debris content, viscosity, and other oil content besides brake fluid.

[0013] Optionally, in one embodiment of this application, the correction module includes: an acquisition unit for acquiring the ambient humidity and / or ambient temperature of the collection point; and a correction unit for correcting the plurality of original test indicators based on the correlation characteristics between the ambient humidity and / or the ambient temperature and the plurality of original test indicators.

[0014] Optionally, in one embodiment of this application, the generation module includes: a first generation unit, configured to generate an effectiveness evaluation result for each of the plurality of inspection indicators and their corresponding effectiveness ranges, so as to determine the effectiveness evaluation result of the brake fluid sample based on each of the inspection indicators and their effectiveness evaluation results; and / or, a second generation unit, configured to generate an evaluation value for each of the plurality of inspection indicators and their corresponding effectiveness ranges, so as to determine the effectiveness evaluation result of the brake fluid sample by combining the evaluation value of each inspection indicator and its corresponding weight.

[0015] Optionally, in one embodiment of this application, it further includes: a collection module, used to collect historical test indicators of the brake fluid in which the brake fluid sample is located; an analysis module, used to analyze the changing patterns of the multiple test indicators based on the historical test indicators; and a third generation unit, used to generate a brake fluid effectiveness indicator for the target vehicle based on the multiple test indicators and their corresponding changing patterns.

[0016] A third aspect of this application provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the vehicle brake fluid effectiveness detection method as described in the above embodiments.

[0017] A fourth aspect of this application provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described method for detecting the effectiveness of vehicle brake fluid.

[0018] A fifth aspect of this application provides a computer program product, including a computer program that, when executed, is used to implement the above-described method for detecting the effectiveness of vehicle brake fluid.

[0019] This application embodiment can collect brake fluid samples from target vehicles to extract multiple original test indicators, and correct these indicators based on environmental information at the collection points. Finally, based on the corrected test indicators and target evaluation criteria, a validity evaluation result for the brake fluid sample is generated. This achieves comprehensive collection of core performance indicators such as boiling point, moisture content, and viscosity, combined with corrections for data deviations based on ambient temperature and humidity at the collection points. By judging or weighting the evaluation of each indicator individually, the system integrates the test results from multiple dimensions of the brake fluid, effectively improving the accuracy and reliability of the evaluation results. Furthermore, it allows for analysis of the changing patterns of multiple test indicators based on historical brake fluid test data. This enables early warning and predictive maintenance of brake fluid performance while effectively avoiding misjudgments caused by environmental interference and subjective judgment. It helps to accurately locate potential brake fluid failure risks, prevent sudden brake system malfunctions to ensure driving safety, avoid resource waste caused by over-maintenance and safety hazards caused by untimely maintenance, and make brake fluid maintenance more targeted, scientific, and forward-looking. This solves the problems of brake fluid testing methods in related technologies, which are often complicated to operate and may not accurately reflect the actual performance of the brake fluid in real time. This can easily lead to the inability to promptly remind users of brake fluid problems, making it difficult to ensure the safety and braking performance of the vehicle's braking system and posing certain safety hazards to the vehicle.

[0020] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a flowchart of a method for detecting the effectiveness of vehicle brake fluid according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a vehicle brake fluid effectiveness detection system according to an embodiment of this application; Figure 3 This is a flowchart of a vehicle brake fluid effectiveness test according to an embodiment of this application; Figure 4 This is a schematic diagram of the vehicle brake fluid effectiveness testing device provided according to an embodiment of this application; Figure 5 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of this application.

[0022] Figure label: 10-Vehicle brake fluid effectiveness testing device; 100-Extraction module, 200-Correction module and 300-Generation module; 501-Memory, 502-Processor and 503-Communication interface. Detailed Implementation

[0023] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0024] The following description, with reference to the accompanying drawings, describes a method and apparatus for detecting the effectiveness of vehicle brake fluid according to embodiments of this application. Addressing the issue that brake fluid detection methods in the aforementioned background art are typically complex to operate and may not accurately reflect the actual performance of the brake fluid in real time, potentially leading to a failure to promptly alert users to brake fluid problems and thus hindering the safety and braking performance of the vehicle's braking system, posing certain safety hazards, this application provides a method for detecting the effectiveness of vehicle brake fluid. In this method, brake fluid samples from a target vehicle are collected to extract multiple original test indicators. These indicators are then corrected based on environmental information from the collection point. Finally, based on the corrected test indicators and target evaluation criteria, an effectiveness evaluation result for the brake fluid sample is generated. This approach achieves comprehensive data collection of core performance indicators such as boiling point, moisture content, and viscosity, combined with corrections for data deviations based on ambient temperature and humidity at the collection points. By evaluating each indicator individually or through weighted quantification, it integrates multi-dimensional brake fluid test results, effectively improving the accuracy and reliability of the assessment. Furthermore, it allows for analysis of historical brake fluid test data to predict changes in multiple indicators. This approach effectively avoids environmental interference and subjective judgment-induced misjudgments, enabling early warning and predictive maintenance of brake fluid performance. It helps accurately pinpoint potential brake fluid failure risks, preventing sudden brake system malfunctions and ensuring driving safety. It also avoids resource waste from over-maintenance and safety hazards caused by untimely maintenance, making brake fluid maintenance more targeted, scientific, and forward-looking. This addresses the problems of conventional brake fluid testing methods being complex to operate and potentially unable to accurately reflect the actual performance of the brake fluid in real time. These methods often fail to promptly alert users to brake fluid problems, hindering the safety and braking performance of the vehicle's braking system and posing potential safety hazards.

[0025] Example 1 Specifically, Figure 1 This is a flowchart of a method for detecting the effectiveness of vehicle brake fluid provided in an embodiment of this application.

[0026] like Figure 1As shown, the method for testing the effectiveness of the vehicle's brake fluid includes the following steps: Step S101: Collect brake fluid samples from the target vehicle to extract multiple raw test indicators from the brake fluid samples. Step S102: Obtain environmental information of the brake fluid sample collection point, and correct multiple original test indicators based on the environmental information to obtain corrected test indicators. Step S103: Combine multiple test indicators and target evaluation criteria to generate the effectiveness evaluation results of the brake fluid sample.

[0027] In some embodiments, this application may collect brake fluid samples from the target vehicle to test the effectiveness of the vehicle's brake fluid. Here, the target vehicle refers to the vehicle being tested for brake fluid.

[0028] The brake fluid sample can be collected from, but is not limited to, the brake master cylinder reservoir, brake line interface, etc. The specific method can be determined by those skilled in the art based on the actual situation. The embodiments in this application are only illustrative and do not impose specific limitations.

[0029] After obtaining a brake fluid sample from the vehicle, this embodiment of the application can perform testing and analysis on the brake fluid sample to extract multiple original test indicators that can characterize the performance of the brake fluid sample, such as moisture content and boiling point.

[0030] Furthermore, considering that the natural or operating environment parameters (such as temperature, humidity, altitude, etc.) of the brake fluid sample may affect the brake fluid sample and thus the accuracy of the original test indicators, the embodiments of this application may, but are not limited to, obtain the environmental information of the actual collection point of the brake fluid sample, such as the temperature of the brake master cylinder reservoir, the brake line interface, etc., so as to correct the multiple original test indicators of the brake fluid sample obtained from the analysis based on the environmental information, and obtain the corrected multiple test indicators.

[0031] For example, the brake master cylinder reservoir may produce some water vapor due to the temperature difference between the inside and outside of the environment. This may cause the water content in the brake fluid sample to be higher than the actual water content. After correction, the interference of environmental information on the original test indicators can be eliminated.

[0032] After obtaining multiple revised test indicators for the brake fluid sample, the embodiments of this application can combine the multiple test indicators and target analysis criteria of the brake fluid sample to generate an effectiveness evaluation result for the brake fluid sample, such as whether the brake fluid meets the usage requirements, whether it can continue to be used, or whether it needs to be replaced.

[0033] The target evaluation criteria here can be understood as the basis for judging the effectiveness of brake fluid, such as the qualified thresholds or safe ranges of various indicators of brake fluid. For example, the viscosity of normal DOT4 brake fluid should be ≤1800mm² / s at -40℃ and ≥1.5mm² / s at 100℃, with a density of approximately 1.04-1.08g / cm³. Specific target evaluation criteria can be determined or adjusted by those skilled in the art based on national / industry standards, vehicle manufacturer technical specifications, brake fluid product technical requirements, and bench test results. The embodiments in this application are merely illustrative and do not impose specific limitations.

[0034] This application embodiment can obtain original test indicators by collecting brake fluid samples, and then correct them by combining environmental information and certain standards to generate brake fluid effectiveness evaluation results. On the basis of effectively eliminating the interference of environmental factors on brake fluid sample test data, it can make judgments by combining certain criteria, effectively improving the accuracy and reliability of brake fluid performance evaluation. This helps to guide the maintenance of vehicle brake fluid, avoid vehicle braking failure due to brake fluid performance degradation, and ensure vehicle driving safety.

[0035] Optionally, in one embodiment of this application, multiple original test indicators are extracted from the brake fluid sample, including: extracting the boiling point, water content, pH value, metal debris content, viscosity, and other oil content besides brake fluid from the brake fluid sample; and determining multiple original test indicators based on the boiling point, water content, pH value, metal debris content, viscosity, and other oil content besides brake fluid.

[0036] In actual implementation, the original test indicators of the brake fluid samples extracted in this application include, but are not limited to, the boiling point (value), water content (value), pH value, metal debris content (value), viscosity (value), and the content of other oils besides brake fluid (value).

[0037] Among them, the boiling point of brake fluid is a key parameter for evaluating its thermal stability and water content. For example, the dry boiling point (the boiling point of brake fluid before it absorbs water) can directly reflect the original thermal stability of the brake fluid, while the wet boiling point (the boiling point of brake fluid after absorbing a certain amount of water) determines the anti-vapor resistance performance of the brake fluid after long-term use and water absorption. If the temperature exceeds the boiling point during braking, the brake fluid may vaporize and generate bubbles, leading to a soft brake pedal and brake failure. During testing, the boiling point of the sample brake fluid can be determined by, but is not limited to, a dedicated boiling point detection device with a dedicated sensor or integrated temperature sensor.

[0038] Brake fluid is hygroscopic and will absorb moisture from the air and crevices during long-term use, which will lead to a decrease in the boiling point of the brake fluid and an increase in its corrosiveness, accelerating the corrosion of metal components in the braking system. Therefore, the current state and remaining service life of the brake fluid can be accurately predicted by measuring changes in moisture content. During testing, conductivity sensors or other humidity sensing devices can be used for measurement.

[0039] The acid value of brake fluid can quantitatively characterize the content of acidic substances in the brake fluid, while the pH value can reflect the overall acidity and alkalinity of the brake fluid. As core indicators for corrosion assessment, an increase in acid value or an excessive change in pH value (too acidic or too alkaline) will both destroy the actual chemical stability of the brake fluid and accelerate the corrosion of metal components such as brake lines and brake master cylinders, leading to aging, expansion, or cracking of seals, which in turn can cause brake fluid leakage and damage to the vehicle's braking system. During testing, the acid value or pH value can be measured by a pH sensor, but is not limited to this.

[0040] The metal debris content in brake fluid not only reflects the degree of contamination in the braking system but also accurately identifies the source of wear on brake fluid contact components. For example, copper debris often comes from copper components such as the inner wall of brake lines and connectors, iron debris often comes from the steel pistons of the master / slave cylinders, and aluminum debris may originate from brake booster pump components. By analyzing the type and content of metal debris, abnormal wear in the braking system can be predicted in advance. During testing, the contamination level in the brake fluid can be determined using a particle counter, and the content of elements such as copper and iron can be quickly detected using a metal element analyzer for quantitative analysis.

[0041] Brake fluid viscosity is a key indicator of its flow performance, directly affecting the response speed and reliability of the braking system. For example, excessively high viscosity at low temperatures increases the flow resistance of the brake fluid in the lines, resulting in longer brake pedal travel and slower response; excessively low viscosity at high temperatures reduces the lubrication effect of the brake fluid on the braking components, accelerates seal wear, and may even cause brake fluid leakage. During testing, the dynamic viscosity can be calculated by measuring the damping change of the vibrating pad in the brake fluid within a standard temperature range of 40℃ to 100℃ using temperature sensors and vibratory viscometers.

[0042] The content of fluids other than brake fluid refers to the proportion of non-brake fluid fluids such as engine oil, transmission fluid, and coolant mixed in with the brake fluid sample. The presence of these fluids in the brake fluid can disrupt its chemical stability, leading to a decrease in its boiling point, failure of its lubrication and sealing performance, and potentially causing blockage of brake lines or corrosion of brake components, directly affecting the reliability of the braking system. During testing, methods such as infrared spectroscopy to quantitatively identify the mixed components and their content using characteristic spectral peaks of different fluids, or gas chromatography-mass spectrometry to separate and accurately determine the specific components and concentrations of the mixed fluids, can be used.

[0043] This application embodiment can comprehensively test multiple original test indicators of brake fluid, such as boiling point and water content, and fully cover key performance dimensions such as thermal stability, corrosiveness, fluidity, and purity of brake fluid. This allows for the accurate detection of potential problems such as brake fluid performance degradation, metal debris contamination, and mixing with other fluids. It provides comprehensive and objective basic data support for subsequent environmental remediation and effectiveness assessment, ensuring that the final brake fluid effectiveness judgment is more targeted and accurate. This helps to avoid braking system failures caused by brake fluid performance defects from the source and ensure vehicle braking safety.

[0044] Optionally, in one embodiment of this application, environmental information of the brake fluid sample collection point is obtained to correct multiple original test indicators based on the environmental information, including: obtaining the environmental humidity and / or environmental temperature of the collection point; and correcting multiple original test indicators based on the correlation characteristics between the environmental humidity and / or environmental temperature and multiple original test indicators.

[0045] In some embodiments, when correcting multiple original test indicators based on environmental information, this application may, but is not limited to, correct multiple original test indicators by using the correlation characteristics between the environmental humidity and / or environmental temperature (environmental temperature, or environmental humidity, or environmental temperature and environmental humidity) at the sampling point of the obtained brake fluid sample and multiple original test indicators.

[0046] Here, ambient humidity refers to the moisture content in the air around the brake fluid sample collection point (such as the brake master cylinder reservoir). In this embodiment, it can be expressed as relative humidity (RH), but is not limited to this. It is a core environmental factor affecting the accuracy of the detection of indicators such as brake fluid moisture content. Ambient temperature refers to the temperature of the environment around the brake fluid sample collection point (such as the brake master cylinder reservoir), which directly affects the original detection results of thermophysical performance indicators such as brake fluid viscosity and boiling point.

[0047] The correlation characteristics between ambient humidity and / or ambient temperature and multiple original test indicators can be understood here as the causal relationship or statistical correlation between ambient humidity, ambient temperature and the original test indicators of brake fluid, that is, the pattern that changes in the environment cause the original test indicators to deviate from their true values. Specific correlation characteristics can be, but are not limited to, those derived by those skilled in the art based on experimental calibration, etc. The embodiments in this application are merely illustrative and do not impose specific limitations.

[0048] For example, using a temperature of 25°C and a relative humidity of 50% as standard environmental reference values, the associated features can be, but are not limited to, pre-set as follows: for every 10°C increase in ambient temperature compared to 25°C, the dry boiling point detection value will be 1°C lower and the wet boiling point will be 0.8°C lower; for every 1°C deviation in ambient temperature compared to 40°C, the viscosity detection value will deviate by 0.15 mm² / s (viscosity will be lower when the temperature is above 40°C and higher when it is below 40°C); for every 50% increase in ambient humidity compared to 10%, the moisture content detection value will be 0.02% higher. Since the test indicators such as pH value, metal debris content, and other oil content are minimally affected by ambient temperature / humidity, no corrective associated features are set in this application embodiment.

[0049] Based on this pre-defined correlation characteristic, when the ambient temperature at the temperature and humidity sensor's measured data point is 35℃ and the relative humidity is 70%, and the original test indicators for the brake fluid sample are a dry boiling point of 203℃, a wet boiling point of 139℃, a water content of 0.32%, and a kinematic viscosity of 13.2 mm² / s, the corrected test indicators are as follows: Dry boiling point: original 203℃ + (35℃ - 25℃) × 0.1℃ = 204℃; Wet boiling point: original 139℃ + (35℃ - 25℃) × 0.08℃ = 139.8℃; Moisture content: Original 0.32% - (70% - 50%) × 0.02% = 0.28%; Kinematic viscosity correction: Original 13.2 mm² / s + (40℃-35℃) × 0.15 mm² / s = 13.95 mm² / s.

[0050] This application embodiment can obtain the ambient temperature and humidity at the collection point, and use their correlation characteristics with the original test indicators to correct the data, effectively eliminating the influence of environmental factors on the test results. This makes the corrected test indicators closer to the real performance of brake fluid under standard operating conditions or actual working environments, improving the accuracy and comparability of the test indicators, avoiding misjudgments of brake fluid effectiveness due to environmental factors, such as misjudgments of excessive moisture or unqualified viscosity, and providing reliable data support for subsequent evaluation.

[0051] Optionally, in one embodiment of this application, generating an effectiveness evaluation result for a brake fluid sample by combining multiple testing indicators and target analysis criteria includes: generating an effectiveness evaluation result for each testing indicator based on multiple testing indicators and their corresponding effectiveness ranges, so as to determine the effectiveness evaluation result of the brake fluid sample based on each testing indicator and its effectiveness evaluation result; and / or, generating an evaluation value for each testing indicator by combining multiple testing indicators and their corresponding effectiveness ranges, so as to determine the effectiveness evaluation result of the brake fluid sample by combining the evaluation value of each testing indicator and its corresponding weight.

[0052] In some embodiments, when generating effectiveness assessment results by combining multiple test indicators and target evaluation criteria of brake fluid samples, different evaluation methods may be proposed, but are not limited to, based on the actual situation.

[0053] On the one hand, embodiments of this application can, but are not limited to, generate an effectiveness evaluation result for each testing indicator based on multiple testing indicators and their corresponding effectiveness ranges, and then determine the effectiveness evaluation result of the brake fluid sample based on each testing indicator and its corresponding effectiveness evaluation result. Simply put, embodiments of this application can determine the final effectiveness evaluation result of the brake fluid sample based on the effectiveness evaluation result of a single testing indicator. If the effectiveness evaluation result of any testing indicator is found to be unsatisfactory, it can be determined that the effectiveness of the brake fluid sample does not meet the effectiveness requirements.

[0054] For example, the effective range of brake fluid is: dry boiling point ≥205℃, wet boiling point ≥140℃, water content ≤0.3%, kinematic viscosity at 40℃ 10~15mm² / s, pH value 7.5~9.0, copper content ≤0.05mg / L, and other fluid contents not detected. The actual test indicators are: dry boiling point 204℃, water content 0.28%, kinematic viscosity at 40℃ 12mm² / s, pH value 7.4, copper content 0.02mg / L, and other fluid contents not detected. Therefore, the effectiveness evaluation result for each test indicator is: boiling point critical, water content qualified, viscosity qualified, pH value qualified, copper content qualified, other fluid contents normal, and pH value slightly unqualified.

[0055] Since the main safety indicator of the brake fluid sample, the boiling point, is close to the failure threshold, and only the pH value is slightly exceeded, with no serious non-compliance items, the final effectiveness assessment result of the brake fluid sample is: the effectiveness of the boiling point indicator of the brake fluid has significantly declined.

[0056] On the other hand, embodiments of this application can also combine multiple test indicators and their corresponding validity ranges to generate an evaluation value for each test indicator. This evaluation value, combined with its corresponding weight, determines the validity assessment result of the brake fluid sample. In other words, embodiments of this application can combine all test indicators, weighting the evaluation values ​​of multiple test indicators using the evaluation values ​​of each indicator and their corresponding weights, and finally using the total weighted value as the validity assessment result of the brake fluid sample.

[0057] For example, this application can set scoring rules for each indicator: 100 points are awarded for fully meeting the indicator, and points are deducted proportionally for deviations from the threshold: 10 points are deducted for each deviation from the nearest effective value range endpoint (maximum or minimum effective value), with a minimum of 0 points; the weight of each inspection indicator can be, but is not limited to, set as follows: dry boiling point 30%, wet boiling point 25%, moisture 15%, viscosity 10%, pH value 10%, copper content 5%, and other oils 5%. The specific scoring rules and the weight of each inspection indicator can be determined by those skilled in the art and according to actual circumstances. The embodiments in this application are only illustrative and do not impose specific limitations.

[0058] The evaluation values ​​for each test indicator can be calculated by the deviation threshold between each test indicator and the standard test indicator: dry boiling point 95 points, wet boiling point 98 points, water content 100 points, viscosity 100 points, pH value 85 points, copper content 100 points, and other oil content 100 points. The weighted total score of the multiple test indicators is: 95×30% + 98×25% + 100×15% + 100×10% + 85×10% + 100×5% + 100×5% = 95.5 points; When the total score threshold is ≥90 points for good, 80~89 points for qualified, and <80 points for unqualified, the effectiveness evaluation result of the brake fluid sample is: good effectiveness but close to the critical point.

[0059] Furthermore, based on the effectiveness assessment results of the brake fluid sample, this embodiment of the application can prompt the driver to replace the brake fluid through the vehicle interface, etc., to ensure driving safety.

[0060] For example, by integrating with the vehicle's computer system, real-time monitoring and data analysis can automatically alert the driver to the effectiveness of the brake fluid. If the test results are unsatisfactory, the system will issue an alarm and recommend that the user replace the brake fluid as soon as possible. A "Brake Fluid Status" icon will be displayed on the central control screen or instrument panel, with the color changing from green (healthy) to yellow (caution) and then to red (alarm). When a certain indicator approaches the critical value, a text message will be displayed: "The brake fluid water content has reached 2.5%, and it is recommended to schedule an inspection soon." When the indicator is seriously out of control, a red alarm will be displayed on the screen along with a clear action instruction: "Brake fluid boiling point is too low! There is a safety hazard. Please drive cautiously immediately and contact service!" The vehicle system can also connect to a mobile terminal, allowing the owner to remotely view detailed brake fluid reports, health scores, and trend graphs via a mobile app.

[0061] It should be noted that the specific method for determining the effectiveness evaluation results of the brake fluid sample can be determined by those skilled in the art based on the actual situation. The embodiments in this application are only illustrative and do not impose any specific limitations.

[0062] This application provides multiple pathways for assessing brake fluid effectiveness. One approach is to evaluate performance based on individual test indicators, providing a clear picture of the compliance status of each indicator and facilitating the identification of specific problems. Another approach is to use weighted scoring to quantify overall performance, highlighting the impact of key safety indicators and avoiding misjudgments based on a single indicator. By comprehensively integrating multi-dimensional brake fluid test data and reducing subjective judgment errors, this approach effectively improves the scientific rigor and reliability of brake fluid effectiveness assessment results. It provides a precise basis for brake fluid replacement and maintenance optimization, avoids resource waste due to over-maintenance, and helps to proactively mitigate safety risks to the vehicle's braking system.

[0063] Optionally, in one embodiment of this application, the method further includes: collecting historical test indicators of the brake fluid in which the brake fluid sample is located; analyzing the changing patterns of multiple test indicators based on the historical test indicators; and generating a brake fluid effectiveness indicator for the target vehicle based on the multiple test indicators and their corresponding changing patterns.

[0064] In some embodiments, this application may also collect historical test indicators of the brake fluid in which the brake fluid sample is located, and then generate the change pattern of each test indicator based on the historical test indicators of the brake fluid sample, thereby generating a brake fluid effectiveness indicator for the vehicle based on the change pattern of each test indicator.

[0065] Here, historical test indicators can be understood as a collection of multiple test indicators of the brake fluid sample collected at different points in the past, after environmental correction. It not only includes the specific values ​​of multiple test indicators, but also information such as the collection time, the vehicle's operating conditions at that time (such as mileage and braking frequency), and environmental conditions.

[0066] For example, embodiments of this application can continuously monitor data and utilize algorithms in the vehicle's computer to automatically learn the degradation trend of brake fluid performance. For instance, when the system detects that historical test indicators of brake fluid moisture content over a certain period show that the moisture content is increasing at a certain rate, even if it is less than 3%, it can generate a brake fluid effectiveness warning to provide an early alert: based on the current trend of brake fluid moisture content changes, your brake fluid is expected to need to be replaced in 3 months, thereby achieving predictive maintenance of brake fluid.

[0067] This application embodiment can accurately capture the changing trend of brake fluid by collecting historical test indicators and analyzing their changing patterns, thereby enabling predictive maintenance of brake fluid, providing early warning of potential failure risks, and avoiding brake system failures caused by sudden performance degradation of brake fluid. At the same time, it can optimize maintenance timing based on the actual decay rate, preventing resource waste caused by premature replacement and safety hazards caused by delayed replacement.

[0068] Example 2 Figure 2 This is a schematic diagram of the structure of a vehicle brake fluid effectiveness detection system according to an embodiment of this application. Figure 3 This is a flowchart illustrating a vehicle brake fluid effectiveness test according to an embodiment of this application. Figure 2 and Figure 3 As shown: In this embodiment of the application, the boiling point of the brake fluid can be measured by a boiling point sensor, the water content of the brake fluid can be measured by a moisture sensor, and the pH value of the brake fluid can be measured by a pH sensor. When the boiling point of the brake fluid is lower than 204°C, the water content exceeds 3%, or the pH value is lower than 6.5 or higher than 8.0, the system will automatically prompt and issue an alarm to inform the car owner that the brake fluid needs to be replaced. The car owner can view the test results of the brake fluid through the display screen connected to the vehicle system or the mobile APP.

[0069] The vehicle brake fluid effectiveness testing method proposed in this application involves collecting brake fluid samples from a target vehicle to extract multiple original test indicators. These indicators are then corrected based on environmental information from the collection point. Finally, the effectiveness evaluation result of the brake fluid sample is generated based on the corrected test indicators and target evaluation criteria. This method comprehensively collects core performance indicators such as boiling point, water content, and viscosity, corrects data deviations by combining them with environmental temperature and humidity at the collection point, and integrates the test results of multiple dimensions of brake fluid through individual indicator judgment or weighted quantitative evaluation. This effectively improves the accuracy and reliability of the evaluation results. Furthermore, it allows for analysis of the changing patterns of multiple test indicators based on historical brake fluid test indicators. This enables early warning and predictive maintenance of brake fluid performance while effectively avoiding misjudgments caused by environmental interference and subjective judgment. It helps to accurately locate potential brake fluid failure risks, prevent sudden brake system malfunctions to ensure driving safety, avoid resource waste caused by over-maintenance and safety hazards caused by untimely maintenance, and makes brake fluid maintenance more targeted, scientific, and forward-looking. This solves the problems of brake fluid testing methods in related technologies, which are often complicated to operate and may not accurately reflect the actual performance of the brake fluid in real time. This can easily lead to the inability to promptly remind users of brake fluid problems, making it difficult to ensure the safety and braking performance of the vehicle's braking system and posing certain safety hazards to the vehicle.

[0070] Next, with reference to the accompanying drawings, a vehicle brake fluid effectiveness detection device according to an embodiment of this application is described.

[0071] Figure 4 This is a schematic diagram of the vehicle brake fluid effectiveness detection device according to an embodiment of this application.

[0072] like Figure 4 As shown, the vehicle brake fluid effectiveness detection device 10 includes: an extraction module 100, a correction module 200, and a generation module 300.

[0073] The extraction module 100 is used to collect brake fluid samples from the target vehicle to extract multiple original test indicators of the brake fluid samples; the correction module 200 is used to obtain environmental information of the collection point of the brake fluid samples to correct multiple original test indicators based on the environmental information, thereby obtaining multiple corrected test indicators; and the generation module 300 is used to combine multiple test indicators and target evaluation criteria to generate the effectiveness evaluation results of the brake fluid samples.

[0074] Optionally, in one embodiment of this application, the extraction module 100 includes: an extraction unit for extracting the boiling point, moisture content, pH value, metal debris content, viscosity, and other oil content besides brake fluid from a brake fluid sample; and a determination unit for determining multiple original test indicators based on the boiling point, moisture content, pH value, metal debris content, viscosity, and other oil content besides brake fluid.

[0075] Optionally, in one embodiment of this application, the correction module 200 includes: an acquisition unit for acquiring the ambient humidity and / or ambient temperature of the collection point; and a correction unit for correcting multiple original test indicators based on the correlation characteristics between the ambient humidity and / or ambient temperature and multiple original test indicators.

[0076] Optionally, in one embodiment of this application, the generation module 300 includes: a first generation unit, configured to generate an effectiveness evaluation result for each inspection indicator based on multiple inspection indicators and their corresponding effectiveness ranges, so as to determine the effectiveness evaluation result of the brake fluid sample based on each inspection indicator and its effectiveness evaluation result; and / or, a second generation unit, configured to generate an evaluation value for each inspection indicator by combining multiple inspection indicators and their corresponding effectiveness ranges, so as to determine the effectiveness evaluation result of the brake fluid sample by combining the evaluation value of each inspection indicator and its corresponding weight.

[0077] Optionally, in one embodiment of this application, it further includes: a collection module for collecting historical test indicators of the brake fluid in which the brake fluid sample is located; an analysis module for analyzing the changing patterns of multiple test indicators based on the historical test indicators; and a third generation unit for generating a brake fluid effectiveness indicator for the target vehicle based on the multiple test indicators and their corresponding changing patterns.

[0078] It should be noted that the explanation of the above-described embodiment of the vehicle brake fluid effectiveness detection method also applies to the vehicle brake fluid effectiveness detection device of this embodiment, and will not be repeated here.

[0079] The vehicle brake fluid effectiveness testing device proposed in this application can collect brake fluid samples from a target vehicle to extract multiple original test indicators. These original test indicators are then corrected based on environmental information from the collection point. Finally, based on the corrected test indicators and target evaluation criteria, an effectiveness evaluation result for the brake fluid sample is generated. This achieves comprehensive collection of core performance indicators such as boiling point, water content, and viscosity, combined with corrections for data deviations based on ambient temperature and humidity at the collection point. By judging or weighting each indicator individually, the device integrates the test results from multiple dimensions of the brake fluid, effectively improving the accuracy and reliability of the evaluation results. Furthermore, it can analyze the changing patterns of multiple test indicators by combining historical test indicators of the brake fluid. This allows for early warning and predictive maintenance of brake fluid performance while effectively avoiding misjudgments caused by environmental interference and subjective judgment. It helps to accurately locate potential brake fluid failure risks, prevent sudden brake system malfunctions to ensure driving safety, avoid resource waste caused by over-maintenance and safety hazards caused by untimely maintenance, and make brake fluid maintenance more targeted, scientific, and forward-looking. This solves the problems of brake fluid testing methods in related technologies, which are often complicated to operate and may not accurately reflect the actual performance of the brake fluid in real time. This can easily lead to the inability to promptly remind users of brake fluid problems, making it difficult to ensure the safety and braking performance of the vehicle's braking system and posing certain safety hazards to the vehicle.

[0080] Figure 5 A schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device may include: The memory 501, the processor 502, and the computer program stored on the memory 501 and capable of running on the processor 502.

[0081] When the processor 502 executes the program, it implements the vehicle brake fluid effectiveness detection method provided in the above embodiments.

[0082] Furthermore, electronic devices also include: Communication interface 503 is used for communication between memory 501 and processor 502.

[0083] The memory 501 is used to store computer programs that can run on the processor 502.

[0084] Memory 501 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0085] If the memory 501, processor 502, and communication interface 503 are implemented independently, then the communication interface 503, memory 501, and processor 502 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 5 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.

[0086] Optionally, in a specific implementation, if the memory 501, processor 502, and communication interface 503 are integrated on a single chip, then the memory 501, processor 502, and communication interface 503 can communicate with each other through an internal interface.

[0087] Processor 502 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.

[0088] This application also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the above-described method for detecting the effectiveness of vehicle brake fluid.

[0089] This application also provides a computer program product, including a computer program that can run computer instructions. When the computer instructions are executed by a processor, they implement the vehicle brake fluid effectiveness detection method provided in this application.

[0090] 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 this application. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0091] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0092] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0093] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0094] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, it can be implemented using any one or more of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0095] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.

[0096] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0097] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A method for testing the effectiveness of vehicle brake fluid, characterized in that, Includes the following steps: Brake fluid samples were collected from the target vehicle to extract multiple raw test indicators from the brake fluid samples. The environmental information of the collection point of the brake fluid sample is obtained, and the multiple original test indicators are corrected based on the environmental information to obtain the corrected multiple test indicators. By combining the aforementioned multiple testing indicators and target evaluation criteria, the effectiveness evaluation results of the brake fluid sample are generated.

2. The method according to claim 1, characterized in that, The extraction of the brake fluid sample involves several raw test indicators, including: Extract the boiling point, water content, pH value, metal debris content, viscosity, and other oil content (excluding brake fluid) of the brake fluid sample; The multiple original test indicators are determined based on the boiling point, moisture content, pH value, metal debris content, viscosity, and the content of other fluids besides brake fluid.

3. The method according to claim 1, characterized in that, The step of obtaining environmental information at the sampling point of the brake fluid sample, and correcting the multiple original test indicators based on the environmental information, includes: Obtain the ambient humidity and / or ambient temperature at the collection points; Based on the correlation characteristics between the ambient humidity and / or the ambient temperature and the plurality of original test indicators, the plurality of original test indicators are corrected.

4. The method according to claim 1, characterized in that, The method of combining the multiple test indicators and target analysis criteria to generate the effectiveness evaluation results of the brake fluid sample includes: Based on the multiple test indicators and their corresponding validity ranges, a validity assessment result for each test indicator is generated, so as to determine the validity assessment result of the brake fluid sample based on each test indicator and its validity assessment result; And / or, by combining the multiple test indicators and their corresponding validity ranges, an evaluation value for each test indicator is generated, so as to determine the validity evaluation result of the brake fluid sample by combining the evaluation value of each test indicator and its corresponding weight.

5. The method according to claim 1, characterized in that, Also includes: Collect historical test indicators of the brake fluid in which the brake fluid sample is located; Based on the historical test indicators, analyze the changing patterns of the multiple test indicators. Based on the multiple inspection indicators and their corresponding changing patterns, a brake fluid effectiveness indicator for the target vehicle is generated.

6. A device for detecting the effectiveness of vehicle brake fluid, characterized in that, include: An extraction module is used to collect brake fluid samples from the target vehicle to extract multiple raw test indicators from the brake fluid samples. The correction module is used to obtain environmental information of the collection point of the brake fluid sample, so as to correct the multiple original test indicators according to the environmental information and obtain the corrected multiple test indicators. The generation module is used to combine the multiple test indicators and target evaluation criteria to generate the effectiveness evaluation results of the brake fluid sample.

7. The apparatus according to claim 6, characterized in that, The extraction module includes: The extraction unit is used to extract the boiling point, water content, pH value, metal debris content, viscosity, and other oil content besides brake fluid from the brake fluid sample. The determining unit is used to determine the plurality of original test indicators based on the boiling point, moisture content, pH value, metal debris content, viscosity, and other oil contents besides brake fluid.

8. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing the program to implement the vehicle brake fluid effectiveness detection method as described in any one of claims 1-5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the vehicle brake fluid effectiveness detection method as described in any one of claims 1-5.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed, it is used to implement the vehicle brake fluid effectiveness detection method as described in any one of claims 1-5.

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