Oil pressure self-checking analysis system applied to automobile brake system

Abstract

The invention discloses an oil pressure self-checking analysis system applied to an automobile brake system, relates to the technical field of brake oil pressure detection, and solves the technical problems that in the prior art, performance detection cannot be carried out on brake oil pressure, and supply efficiency evaluation detection cannot be carried out on brake oil according to data acquisition and analysis. The method specifically comprises the steps that brake oil pressure performance analysis is conducted on an automobile, whether the current brake oil pressure meets the actual requirement or not is judged according to real-time brake oil pressure supply analysis, self-inspection is conveniently conducted when a brake system normally operates, the oil pressure supply stability of the brake system is guaranteed, the brake efficiency of the brake system is guaranteed, and the safety performance of automobile operation is improved. And brake execution reinspection is carried out on the automobile, brake oil pressure supply detection is carried out according to the real-time brake system execution process, the detection accuracy of the brake system is improved, it is ensured that brake oil pressure supply meets the actual requirement, and the safety performance of automobile running is improved.

Description

TECHNICAL FIELD

[0001] The application relates to a brake oil pressure detection technology field, in particular to an oil pressure self-checking analysis system applied to an automobile brake system. BACKGROUND

[0002] The brake oil pressure self-checking can find problems in the brake system in time, ensures driving safety, and the specific method can open the front engine cover, find the brake oil pot, wipe it clean with a paper towel, observe the brake oil level, observe the liquid level through the side of the liquid accumulator, and the liquid level should be in the standard position between the upper and lower lines.

[0003] A patent with the publication number CN106773891A discloses a hydraulic retarder controller self-checking system, which can automatically detect data of each part of the hydraulic retarder, the data processing module can automatically analyze the detection data, the dynamic simulation module can dynamically simulate the state of each part of the hydraulic retarder, and the self-checking system can be controlled by an external device. However, in the prior art, the brake system cannot detect the current automobile operation when running, so that the risk cannot be determined according to the daily vehicle condition, the oil pressure detection accuracy is reduced, and in addition, the brake oil pressure performance cannot be detected, and the brake oil supply efficiency cannot be evaluated and detected according to data collection and analysis.

[0004] In view of the above technical defects, a solution is proposed. SUMMARY

[0005] The purpose of the application is to solve the above-mentioned problems, and an oil pressure self-checking analysis system applied to an automobile brake system is proposed.

[0006] The purpose of the application can be realized by the following technical scheme: an oil pressure self-checking analysis system applied to an automobile brake system, comprising an oil pressure self-checking platform, the oil pressure self-checking platform being communicatively connected with an automobile operation detection unit, a brake oil pressure performance analysis unit and a brake execution rechecking unit. The automobile operation detection unit is used for detecting the automobile operation, collecting overload frequency information and braking distance information, and judging whether the automobile operation detection is abnormal according to the information comparison; The brake oil pressure performance analysis unit is used for analyzing the brake oil pressure performance of the automobile, collecting oil pressure performance data, and obtaining a brake oil pressure performance analysis coefficient in the automobile operation process by substituting the formula, and deducing whether the brake oil performance risk is abnormal according to the coefficient comparison; The brake execution rechecking unit is used for rechecking the brake execution of the automobile, collecting travel distance parameters and moving speed parameters, and deducing whether the oil pressure supply exists floating in the brake system execution process according to the parameter analysis.

[0007] As a preferred embodiment of the present application, the overload frequency information and the braking distance information are respectively a frequency value ratio of a brake usage frequency when the real-time load is overloaded to a brake usage frequency when the real-time load is not overloaded during the operation of the automobile, and a continuous shortening span value of a safe braking distance of the automobile brake when the brake oil pressure is in a peak stage during the operation of the automobile when the real-time load is overloaded.

[0008] As a preferred embodiment of the present application, if the overload frequency information exceeds a frequency value ratio threshold value, or the braking distance information exceeds a distance continuous shortening span threshold value, it is determined that the automobile operation detection is abnormal; if the overload frequency information does not exceed the frequency value ratio threshold value, and the braking distance information does not exceed the distance continuous shortening span threshold value, it is determined that the automobile operation detection is normal.

[0009] As a preferred embodiment of the present application, the oil pressure performance data includes a corresponding value ratio floating span value FK of a minimum liquid level of the brake oil reciprocating floating in the dynamic operation stage of the automobile to an average liquid level of the brake oil in the static operation stage of the automobile, a continuous reduction span value JK of the brake oil pressure average value in the brake system with the increase of the operation frequency of the brake system during the operation of the automobile, and an increase span peak value ZK of the contact surface wear amount when the brake pad and the brake disc contact and brake during the operation of the automobile.

[0010] As a preferred embodiment of the present application, the formula is wherein, bhj1, bhj2, bhj3 are all preset proportion coefficients.

[0011] As a preferred embodiment of the present application, if the brake oil pressure performance analysis coefficient Y during the operation of the automobile exceeds a performance analysis coefficient threshold value range, it is determined that the brake oil performance risk during the operation of the automobile is abnormal; if the brake oil pressure performance analysis coefficient Y during the operation of the automobile does not exceed the performance analysis coefficient threshold value range, it is determined that the brake oil performance during the operation of the automobile is low efficiency; if the brake oil pressure performance analysis coefficient Y during the operation of the automobile is in the performance analysis coefficient threshold value range, it is determined that the brake oil performance risk during the operation of the automobile is normal.

[0012] As a preferred embodiment of the present application, the stroke distance parameter and the moving speed parameter are respectively a distance deviation amount of a brake pedal moving stroke of the brake system corresponding to the same braking distance during the execution of the vehicle system, and a moving speed deviation value of the same braking distance corresponding to the brake pedal stroke corresponding to the same stage when the same force is applied to the brake pedal at different time points during the execution of the brake system.

[0013] As a preferred embodiment of the present application, if the stroke distance parameter exceeds the stroke distance deviation threshold value, or the moving speed parameter exceeds the moving speed deviation threshold value, it is determined that there is floating in the oil pressure supply during the execution of the brake system; if the stroke distance parameter does not exceed the stroke distance deviation threshold value, and the moving speed parameter does not exceed the moving speed deviation threshold value, it is determined that there is no floating in the oil pressure supply during the execution of the brake system.

[0014] Compared with the prior art, the present application has the following advantages: 1、The present application detects the operation of the automobile, infers whether the current brake system oil pressure supply risk exceeds the set risk standard through the automobile operation detection, facilitates oil pressure prediction according to real-time daily automobile use state analysis, further improves the accuracy of oil pressure self-checking, ensures the safety efficiency of automobile traffic, analyzes the brake oil pressure performance of the automobile, infers whether the current brake oil pressure meets the actual demand according to real-time brake oil pressure supply analysis, facilitates self-checking when the brake system is normally operating, ensures the stability of the brake system oil pressure supply, ensures the braking efficiency of the brake system, and improves the safety performance of the automobile operation.

[0015] 2、The present application rechecks the brake execution of the automobile, detects the brake oil pressure supply according to the real-time brake system execution process, improves the detection accuracy of the brake system, ensures that the brake oil pressure supply meets the actual demand, and increases the safety performance of the automobile driving. The present application analyzes and predicts the oil pressure of the automobile, infers whether the current oil pressure is abnormal according to real-time automobile brake system supply oil pressure analysis and prediction, facilitates self-checking and regulation through oil pressure analysis active prediction, improves the operation stability of the brake system, and ensures the execution efficiency of the brake system. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to facilitate those skilled in the art to understand, the present application will be further described below in conjunction with the drawings.

[0017] Figure 1 The present application is a principle diagram of the first embodiment; Figure 2 The present application is a principle diagram of the second embodiment. DETAILED DESCRIPTION

[0018] In order to make those skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0019] Reference to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be combined with any of the other embodiments unless specifically noted otherwise.

[0020] Embodiment one: this embodiment carries out multi-aspect data collection and analysis on the operation scene of the automobile brake system, so as to infer whether the oil pressure performance in the brake system meets the actual demand, and improves the safety of the brake; Please refer to Figure 1 As shown in the figure, the oil pressure self-checking and analyzing system applied to the automobile brake system comprises an oil pressure self-checking platform, the oil pressure self-checking platform is in communication connection with an automobile operation detection unit, a brake oil pressure performance analyzing unit and a brake execution re-checking unit; The oil pressure self-checking platform generates an automobile operation detection signal and sends the automobile operation detection signal to the automobile operation detection unit, the automobile operation detection unit receives the automobile operation detection signal and detects the automobile operation, infers whether the current brake system oil pressure supply risk exceeds the set risk standard through the automobile operation detection, so as to facilitate the oil pressure prediction according to the real-time daily automobile use state analysis, further improve the accuracy of the oil pressure self-checking, and ensure the safety efficiency of the automobile passing; The frequency value ratio of the brake use frequency in the real-time overload of the automobile operation process to the brake use frequency in the non-overload, and the continuous shortening span value of the automobile brake safety braking distance in the peak stage of the brake oil pressure in the real-time overload of the automobile operation process are obtained, and the frequency value ratio of the brake use frequency in the real-time overload of the automobile operation process to the brake use frequency in the non-overload and the continuous shortening span value of the automobile brake safety braking distance in the peak stage of the brake oil pressure in the real-time overload of the automobile operation process are marked as overload frequency information and braking distance information respectively, and compared with a use frequency value ratio threshold and a distance continuous shortening span value threshold respectively: If the frequency value ratio of the brake use frequency in the real-time overload of the automobile operation process to the brake use frequency in the non-overload exceeds the use frequency value ratio threshold, or the continuous shortening span value of the automobile brake safety braking distance in the peak stage of the brake oil pressure in the real-time overload of the automobile operation process exceeds the distance continuous shortening span value threshold, it is determined that the automobile operation detection is abnormal, a high-impact signal is generated and sent to the oil pressure self-checking platform; If the frequency value ratio of the brake usage frequency when the real-time load is overloaded during the vehicle operation process to the brake usage frequency when the real-time load is not overloaded does not exceed the usage frequency value ratio threshold, and the continuous shortening span value of the vehicle brake safety braking distance when the brake oil pressure is in the peak stage during the real-time load overload in the vehicle operation process does not exceed the distance continuous shortening span value threshold, it is determined that the vehicle operation detection is normal, a running low impact signal is generated and sent to the oil pressure self-checking platform; The oil pressure self-checking platform continuously receives the running high impact signal to perform voice warning for overload warning, and controls the speed during overload operation to reduce the brake pressure; Meanwhile, a brake oil pressure performance analysis signal is generated and sent to a brake oil pressure performance analysis unit. After receiving the brake oil pressure performance analysis signal, the brake oil pressure performance analysis unit analyzes the brake oil pressure performance of the vehicle, infers whether the current brake oil pressure meets the actual demand according to the real-time brake oil pressure supply analysis, facilitates self-checking when the brake system is normally operating, ensures the oil pressure supply stability of the brake system, ensures the braking efficiency of the brake system, and improves the safety performance of the vehicle operation; The corresponding numerical ratio floating span value of the lowest liquid level of the brake oil reciprocating floating in the dynamic operation stage of the vehicle and the average liquid level of the brake oil in the static operation stage of the vehicle is obtained, and is marked as FK. The continuous reduction span value of the brake oil pressure mean value in the brake system with the increase of the brake system operation frequency during the vehicle operation process is obtained, and is marked as JK. The increase span peak value of the contact surface wear amount when the brake pad and the brake disc contact braking during the vehicle operation process is obtained, and is marked as ZK. The above collected information is uniformly marked as oil pressure performance data, and the brake oil pressure performance analysis coefficient Y during the vehicle operation process is obtained by substituting the formula, wherein the formula is: wherein bhj1, bhj2, bhj3 are respectively the preset proportion coefficient of the corresponding numerical ratio floating span value of the lowest liquid level of the brake oil reciprocating floating in the dynamic operation stage of the vehicle and the average liquid level of the brake oil in the static operation stage of the vehicle, the continuous reduction span value of the brake oil pressure mean value in the brake system with the increase of the brake system operation frequency during the vehicle operation process, and the increase span peak value of the contact surface wear amount when the brake pad and the brake disc contact braking during the vehicle operation process. The brake oil pressure performance analysis coefficient Y during the vehicle operation process is compared with the performance analysis coefficient threshold range: If the brake oil pressure performance analysis coefficient Y during the running of the automobile exceeds the performance analysis coefficient threshold range, it is determined that the brake oil performance risk is abnormal during the running of the automobile, an oil pressure risk signal is generated and sent to the oil pressure self-checking platform, and after the oil pressure self-checking platform receives the oil pressure risk signal, the oil pressure of the brake system is controlled to ensure that the oil pressure value is within the set range, and the speed of the automobile during the oil pressure control is controlled; If the brake oil pressure performance analysis coefficient Y during the running of the automobile does not exceed the performance analysis coefficient threshold range, it is determined that the brake oil performance is low during the running of the automobile, an oil pressure low efficiency signal is generated and sent to the oil pressure self-checking platform, and the brake system of the automobile is detected by the oil pressure self-checking platform, such as detecting and controlling the oil pressure supply when the automobile is static, increasing the real-time supply when the continuous reduction span value of the brake oil pressure mean is too low, and reducing the gap between the contact surfaces of the brake pad and the brake disc when the brake pad and the brake disc contact and brake when the contact surface wear is too low; If the brake oil pressure performance analysis coefficient Y during the running of the automobile is within the performance analysis coefficient threshold range, it is determined that the brake oil performance risk is normal during the running of the automobile, an oil pressure safety signal is generated and sent to the oil pressure self-checking platform; After the oil pressure self-checking platform receives the oil pressure safety signal, a brake execution re-check signal is generated and sent to the brake execution re-check unit, and after the brake execution re-check unit receives the brake execution re-check signal, the automobile is subjected to brake execution re-check, and the brake oil pressure supply is detected according to the real-time brake system execution process, thereby improving the detection accuracy of the brake system, ensuring that the brake oil pressure supply meets the actual demand, and increasing the safety performance of the automobile during driving; The distance deviation of the brake pedal travel of the brake system corresponding to the same braking distance during the execution of the brake system is obtained, and the moving speed deviation value of the brake pedal travel corresponding to the same braking distance during the execution of the brake system is obtained when the same force is applied to the brake pedal at different times, and the distance deviation of the brake pedal travel of the brake system corresponding to the same braking distance during the execution of the brake system and the moving speed deviation value of the brake pedal travel corresponding to the same braking distance during the execution of the brake system are respectively marked as travel distance parameters and moving speed parameters, and are compared with travel distance deviation threshold and moving speed deviation threshold respectively: If the distance deviation of the brake pedal travel corresponding to the same braking distance during the execution of the brake system exceeds the travel distance deviation threshold, or if the moving speed deviation value of the brake pedal travel corresponding to the same braking distance during the execution of the brake system at different times exceeds the moving speed deviation value threshold, it is determined that the oil pressure supply during the execution of the brake system is floating, a self-check risk signal is generated and sent to the oil pressure self-check platform, and after the oil pressure self-check platform receives the self-check risk signal, the brake system is re-inspected and the brake oil supply is controlled; If the distance deviation of the brake pedal travel corresponding to the same braking distance during the execution of the brake system does not exceed the travel distance deviation threshold, and the moving speed deviation value of the brake pedal travel corresponding to the same braking distance during the execution of the brake system at different times does not exceed the moving speed deviation value threshold, it is determined that the oil pressure supply during the execution of the brake system is not floating, a self-check qualified signal is generated and sent to the oil pressure self-check platform; Embodiment two: the oil pressure self-check in the previous embodiment is performed when the automobile is running, and in this embodiment, the real-time oil pressure supply is predicted to infer whether the current oil pressure is abnormal, please refer to Figure 2 As shown in the figure, the oil pressure self-check platform is communicatively connected with an oil pressure supply prediction unit; The oil pressure self-check platform generates an oil pressure supply prediction signal and sends it to the oil pressure supply prediction unit, and after the oil pressure supply prediction unit receives the oil pressure supply prediction signal, it analyzes and predicts the automobile oil pressure, and according to the real-time automobile brake system oil pressure, it analyzes and predicts whether the current oil pressure is abnormal, so as to actively predict and self-check through oil pressure analysis, improve the running stability of the brake system, and ensure the execution efficiency of the brake system; The time deviation between the full-flow supply time of the brake oil pipeline during the running of the automobile brake system and the time of completing the supply of the brake oil is obtained, and it can be understood that if the time deviation is not within the range, it indicates that there is air in the pipeline during the transportation of the brake oil, which causes no abnormal flow but delays the supply time. The duration of the sustained increase in decibel value caused by the brake braking execution after the brake oil is supplied to the contact surface between the brake pad and the brake disc during the running of the automobile brake system is also obtained, and the time deviation between the full-flow supply time of the brake oil pipeline during the running of the automobile brake system and the time of completing the supply of the brake oil, and the duration of the sustained increase in decibel value caused by the brake braking execution after the brake oil is supplied to the contact surface between the brake pad and the brake disc during the running of the automobile brake system are marked as oil supply time data and decibel increase data respectively, and are compared with the time deviation threshold and the sustained increase duration threshold respectively: If the time deviation of the time consumed by the full-flow supply of the brake oil pipeline in the operation process of the automobile brake system and the time consumed by the completed supply of the brake oil exceeds the time deviation threshold, or the length of time of the continuous increase of the decibel value caused by the brake braking execution after the brake oil is supplied to the contact surface of the brake pad and the brake disc in the operation process of the automobile brake system exceeds the length of time threshold, it is determined that the oil pressure supply of the automobile brake system is abnormal, a predicted supply risk signal is generated and sent to the oil pressure self-checking platform, and after the oil pressure self-checking platform receives the predicted supply risk signal, the oil pressure of the brake system is adjusted and the wear detection of the equipment in the brake system is performed; If the time deviation of the time consumed by the full-flow supply of the brake oil pipeline in the operation process of the automobile brake system and the time consumed by the completed supply of the brake oil does not exceed the time deviation threshold, and the length of time of the continuous increase of the decibel value caused by the brake braking execution after the brake oil is supplied to the contact surface of the brake pad and the brake disc in the operation process of the automobile brake system does not exceed the length of time threshold, it is determined that the oil pressure supply of the automobile brake system is normal, a predicted supply safety signal is generated and sent to the oil pressure self-checking platform; In use, the automobile operation detection unit is used for detecting the operation of the automobile, collecting overload frequency information and braking distance information, and judging whether the automobile operation detection is abnormal according to information comparison; the brake oil pressure performance analysis unit is used for analyzing the brake oil pressure performance of the automobile, collecting oil pressure performance data, and obtaining a brake oil pressure performance analysis coefficient in the operation process of the automobile by substituting the formula, and inferring whether the brake oil performance risk is abnormal according to the coefficient comparison; and the brake execution re-inspection unit is used for re-inspecting the brake execution of the automobile, collecting travel distance parameters and moving speed parameters, and inferring whether the oil pressure supply exists fluctuation in the execution process of the brake system according to parameter analysis.

[0021] The preferred embodiments disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments. Obviously, many modifications and variations can be made according to the content of the present application. The embodiments are selected and described in detail in order to better explain the principles and practical applications of the present application, so that those skilled in the art can well understand and utilize the present application. The present application is limited only by the claims and their full scope and equivalents.

[0022] The above formulas are obtained by collecting a large amount of data for software simulation and selecting a formula close to the true value, and the coefficients in the formula are set by those skilled in the art according to the actual situation; for example, the formula ; the skilled in the art collects multiple sets of sample data and sets the corresponding purification optimization coefficient for each set of sample data; the set purification optimization coefficient and the collected sample data are substituted into the formula, any two formulas constitute a binary linear equation set, the calculated coefficients are screened and the mean value is taken, the values of bhj1, bhj2 and bhj3 are 2.35, 2.27 and 2.7 respectively; the size of the coefficient is to obtain a specific numerical value by quantifying each parameter, which is convenient for subsequent comparison; the size of the coefficient depends on the number of sample data and the preliminary setting of the performance analysis coefficient by the skilled in the art for each set of sample data; as long as it does not affect the proportional relationship between the parameter and the quantized numerical value.

Claims

1. The oil pressure self-test analysis system used in automobile brake system is characterized by: It includes an oil pressure self-test platform, which is communicatively connected to a vehicle operation detection unit, a brake oil pressure performance analysis unit, and a brake execution re-test unit; The vehicle operation detection unit is used to detect vehicle operation, collect overload frequency information and braking distance information, and determine whether the vehicle operation detection is abnormal based on information comparison; The brake oil pressure performance analysis unit is used to analyze the brake oil pressure performance of the vehicle. The collected oil pressure performance data is substituted into the formula to obtain the brake oil pressure performance analysis coefficient during vehicle operation. Based on the coefficient comparison, it is inferred whether the brake oil performance risk is abnormal; The brake execution re-inspection unit is used to re-inspect the brake execution of the vehicle, collect the travel distance parameters and the moving speed parameters, and infer whether there is any fluctuation in the oil pressure supply during the execution of the brake system based on the parameter analysis.

2. The oil pressure self-test analysis system used in the automobile brake system according to claim 1 is characterized in that: The overload frequency information and braking distance information are respectively the frequency ratio of the braking frequency when the vehicle is overloaded in real time during operation to the braking frequency when the vehicle is not overloaded, and the continuous shortening span value of the vehicle's safe braking distance when the brake oil pressure is at its peak when the vehicle is overloaded in real time during operation.

3. The oil pressure self-test analysis system for automobile brake system according to claim 2 is characterized in that: If the overload frequency information exceeds the usage frequency value ratio threshold, or the braking distance information exceeds the distance continuous shortening span value threshold, the vehicle operation detection is judged to be abnormal; if the overload frequency information does not exceed the usage frequency value ratio threshold, and the braking distance information does not exceed the distance continuous shortening span value threshold, the vehicle operation detection is judged to be normal.

4. The oil pressure self-test analysis system for automobile brake system according to claim 1, characterized in that: The oil pressure performance data includes the floating span value FK, which is the ratio of the lowest liquid level height of the brake oil in the dynamic operation stage of the vehicle to the corresponding value of the average liquid level height of the brake oil in the static operation stage of the vehicle; the span value JK, which is the continuous decrease in the average brake oil pressure in the brake system as the operation frequency of the brake system increases during the operation of the vehicle; and the span peak value ZK, which is the increase in the contact surface wear of the brake pad and brake disc when the brake is in contact during the operation of the vehicle.

5. The oil pressure self-test analysis system used in the automobile brake system according to claim 4 is characterized in that: If the brake oil pressure performance analysis coefficient Y exceeds the performance analysis coefficient threshold range during vehicle operation, it is determined that the brake oil performance risk during vehicle operation is abnormal; If the brake oil pressure performance analysis coefficient Y during the operation of the vehicle does not exceed the performance analysis coefficient threshold range, it is determined that the brake oil performance during the operation of the vehicle is inefficient; If the brake oil pressure performance analysis coefficient Y is within the performance analysis coefficient threshold range during vehicle operation, it is determined that the brake oil performance risk during vehicle operation is normal. The formula for the brake oil pressure performance analysis coefficient Y is: , where bhj1, bhj2, and bhj3 are all preset proportional coefficients.

6. The oil pressure self-test analysis system used in an automobile brake system according to claim 1, characterized in that: The travel distance parameter and the moving speed parameter are respectively the distance deviation of the brake pedal movement travel of the braking system corresponding to the same braking distance during the execution of the vehicle system, and the moving speed deviation value of the brake pedal travel corresponding to the same stage when the same force is applied to the brake pedal at different times during the execution of the braking system.

7. The oil pressure self-test analysis system used in the automobile brake system according to claim 6, characterized in that: If the travel distance parameter exceeds the travel distance deviation threshold, or the moving speed parameter exceeds the moving speed deviation threshold, it is determined that there is a fluctuation in the oil pressure supply during the execution of the brake system; If the travel distance parameter does not exceed the travel distance deviation threshold, and the moving speed parameter does not exceed the moving speed deviation threshold, it is determined that there is no fluctuation in the oil pressure supply during the execution of the braking system.

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