A car washing environment pressure tolerance comprehensive evaluation system and evaluation method

Abstract

The application relates to a car washing environment pressure resistance comprehensive evaluation system and evaluation method, through a car washing parameter adjustable automatic car washing device, different car washing conditions can be automatically simulated, diversified car washing scenes from normal washing to extreme high pressure washing are simulated, the pressure fluctuation range in a real environment is covered, manual intervention is not needed, the test time is greatly shortened, a pressure acquisition unit simultaneously acquires pressure data in multiple preset areas on the outer surface of the vehicle, the inefficient point-by-point test problem in a traditional device is avoided, a data analysis unit receives the data of the pressure acquisition unit, and the median and standard deviation of the preset areas under multiple car washing conditions are calculated, the median and standard deviation of the pressure are calculated through a statistical analysis algorithm, the real working condition of the key parts of the car under continuous load (the median) and dynamic impact (the standard deviation) is revealed, and the basis for lightweight design (such as weight reduction in a non-key low fluctuation area) and redundancy design (such as structure reinforcement in a high fluctuation area) is provided.

Description

Technical Field

[0001] This application relates to the field of vehicle body pressure tolerance assessment, specifically to a comprehensive assessment system and method for car wash environment pressure tolerance assessment. Background Technology

[0002] With the rapid development of the automotive industry and the increasing demands of consumers for high-quality car wash services, automatic car wash machines have become an important part of the car wash industry. An automatic car wash machine is a device that uses automation technology to clean, wax, and dry vehicles. Through components such as robotic arms, spray systems, and brushing devices, it achieves efficient cleaning of the vehicle's exterior surface and is widely used in gas stations, parking lots, car detailing shops, and other similar locations.

[0003] In related technologies, the pressure on a vehicle varies under different car wash conditions. Excessive pressure can cause scratches on the paint. Real-time monitoring and recording of the pressure on key parts of a car during the car wash process is of great significance for providing a scientific basis for optimizing key parts of the car. However, traditional devices for assessing the pressure tolerance of car wash environments have single test conditions and perform point-by-point tests, resulting in insufficient accuracy and low testing efficiency. Summary of the Invention

[0004] This application provides a comprehensive evaluation system and method for assessing the environmental pressure tolerance of car washes, which can solve the problems of insufficient accuracy and low testing efficiency caused by the single test conditions and point-by-point testing of traditional devices for assessing the environmental pressure tolerance of car washes.

[0005] In a first aspect, embodiments of this application provide a comprehensive assessment system for the environmental pressure tolerance of a car wash, comprising:

[0006] The car wash parameter adjustable automatic car wash device is used to control the water spray pressure, water flow speed and scrubbing force to simulate different car wash conditions.

[0007] A pressure acquisition unit is deployed in multiple preset areas on the outer surface of the vehicle. The pressure acquisition unit is used to collect pressure data of multiple preset areas in real time during the car washing process.

[0008] A data analysis unit is connected to the pressure acquisition unit. The data analysis unit is used to receive the pressure data collected by the pressure acquisition unit and calculate the median and standard deviation of the preset area under car wash conditions.

[0009] In conjunction with the first aspect, in one embodiment, the comprehensive assessment system for environmental pressure tolerance of car washes further includes:

[0010] A data processing unit is connected between the pressure acquisition unit and the data analysis unit. The data processing unit performs signal conditioning, analog-to-digital conversion and anti-interference processing on the pressure signal from the pressure acquisition unit, and then transmits the standardized data to the data analysis unit.

[0011] In conjunction with the first aspect, in one embodiment, the comprehensive assessment system for environmental pressure tolerance of car washes further includes:

[0012] An active safety protection unit is connected to the adjustable car wash parameter automatic car wash device and the data analysis unit. The active safety protection unit is used to control and stop the operation of the adjustable car wash parameter automatic car wash device when the pressure data received by the data analysis unit exceeds a set threshold or the pressure acquisition unit malfunctions.

[0013] In conjunction with the first aspect, in one embodiment, the adjustable car wash parameter automatic car wash device includes:

[0014] Multi-degree-of-freedom robotic arm;

[0015] A water pump is connected to the end of the first robotic arm of the multi-degree-of-freedom robotic arm;

[0016] A rotating brush, wherein the rotating brush is connected to the end of the second robotic arm of the multi-degree-of-freedom robotic arm;

[0017] A linear drive mechanism is provided, wherein a rotating roller brush is mounted on the linear drive mechanism, and the linear drive mechanism can drive the rotating roller brush to move along the length direction of the vehicle body;

[0018] The controller is connected to the multi-degree-of-freedom robotic arm, the water pump, the rotating brush, the linear drive mechanism, and the rotating roller brush.

[0019] In conjunction with the first aspect, in one embodiment, the pressure acquisition unit includes:

[0020] A thin-film pressure sensor array one is arranged on the car door glass via a suction cup, which is used to collect pressure data on the car door glass in real time during the car washing process.

[0021] A second thin-film pressure sensor array is arranged on the car door via a suction cup and is used to collect pressure data on the car door in real time during the car wash process.

[0022] In conjunction with the first aspect, in one embodiment, the pressure acquisition unit includes:

[0023] A cylindrical roller is movably mounted in the rear trunk via a mounting bracket, and the upper surface of the cylindrical roller is flush with the roof of the vehicle. It is used to bear the pressure applied by the automatic car wash device with adjustable car wash parameters.

[0024] An indirect pressure sensor is movably mounted in the rear tail box via a suction cup and contacts the lower surface of the cylindrical roller.

[0025] In conjunction with the first aspect, in one embodiment, the comprehensive assessment system for environmental pressure tolerance of car washes further includes:

[0026] The pressure distribution visualization unit is connected to the automatic car wash device with adjustable car wash parameters, the pressure acquisition unit, and the data analysis unit. The pressure distribution visualization unit is used to display the pressure distribution of multiple preset areas in real time, which facilitates operators to monitor and adjust the car wash conditions.

[0027] Secondly, embodiments of this application provide an evaluation method for a comprehensive assessment system for the environmental pressure tolerance of a car wash as described in some of the above embodiments, which includes the following steps:

[0028] The automatic car wash device with adjustable car wash parameters controls the combination of spray pressure, water flow speed and scrubbing force to simulate different car wash conditions and simultaneously collect pressure data from multiple preset areas on the vehicle's outer surface.

[0029] The median and standard deviation of the preset area under car wash conditions are calculated using the data analysis unit.

[0030] In conjunction with the second aspect, in one embodiment, before the step of using an adjustable automatic car wash device to control a combination of parameters including water spray pressure, water flow velocity, and scrubbing intensity to simulate different car wash conditions and simultaneously collect pressure data from multiple preset areas on the vehicle's outer surface, the method further includes:

[0031] An automatic car wash device with adjustable wash parameters applies a reference pressure to the vehicle surface and self-calibrates the pressure acquisition unit to eliminate installation errors.

[0032] In conjunction with the second aspect, in one implementation, the step of using a data analysis unit to calculate the median and standard deviation of a preset area under car wash conditions includes:

[0033] The pressure signal acquired by the pressure acquisition unit is processed by the data processing unit, including signal conditioning, analog-to-digital conversion and anti-interference processing, and then the standardized data is transmitted to the data analysis unit.

[0034] The median and standard deviation of the preset area under car wash conditions are calculated using the data analysis unit.

[0035] The beneficial effects of the technical solutions provided in this application include:

[0036] With an automatic car wash device that allows for adjustable washing parameters, the system can automatically simulate different car wash conditions, ranging from regular rinsing to extreme high-pressure rinsing. This covers the pressure fluctuation range in real-world environments, eliminating the need for manual intervention and significantly reducing testing time. The pressure acquisition unit simultaneously collects pressure data from multiple preset areas on the vehicle's exterior surface, avoiding the inefficiency of point-by-point testing in traditional devices. The data analysis unit processes the collected pressure data in real time. While traditional methods rely on extreme pressure tests, the combination of median and standard deviation reveals the real-world conditions of critical automotive components under continuous load (median) and dynamic impact (standard deviation), providing a quantitative basis for lightweight design (such as weight reduction in non-critical low-fluctuation areas) and redundant design (such as structural reinforcement in high-fluctuation areas). Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 A schematic diagram of a cylindrical roller movably mounted in the rear tail box;

[0039] Figure 2 for Figure 1 A magnified structural diagram of A in the middle.

[0040] In the diagram: 1. Rear trunk; 2. Rotating roller brush; 3. Cylindrical roller; 4. Indirect pressure sensor. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0042] This application provides a comprehensive evaluation system and optimization method for the environmental pressure tolerance of car washes, which can solve the problems of insufficient accuracy and low testing efficiency caused by the single test conditions and point-by-point testing of traditional devices for evaluating the environmental pressure tolerance of car washes.

[0043] In a first aspect, embodiments of this application provide a comprehensive assessment system for the environmental pressure tolerance of a car wash, comprising: an automatic car wash device with adjustable washing parameters, used to control water spray pressure, water flow speed, and brushing force to simulate different car wash conditions; a pressure acquisition unit deployed on multiple preset areas on the outer surface of the vehicle, the pressure acquisition unit being used to collect pressure data of the multiple preset areas in real time during the car wash process; and a data analysis unit connected to the pressure acquisition unit, the data analysis unit being used to receive the pressure data collected by the pressure acquisition unit and calculate the median and standard deviation of the preset areas under car wash conditions.

[0044] In this embodiment, an automatic car wash device with adjustable parameters is used. This device can automatically control the water spray pressure, water flow speed, and scrubbing intensity to simulate diverse car wash scenarios, ranging from regular rinsing to extreme high-pressure rinsing. Employing an automated control system, it simulates different car wash conditions through preset programs or real-time parameter adjustments, covering the pressure fluctuation range in real-world environments. This ensures the comprehensiveness and authenticity of the test, eliminating the need for manual intervention, significantly shortening test time, and improving test efficiency. Pressure acquisition units are deployed in multiple preset areas on the vehicle's exterior surface to collect pressure data from each area in real-time during the car wash process. These units are distributed across key parts of the vehicle (such as doors, hood, and roof). By collecting data synchronously at multiple points, the inefficiency of traditional point-by-point testing is avoided, ensuring the comprehensiveness and real-time nature of data collection. The data analysis unit receives data from the pressure collection unit and calculates the median and standard deviation of the preset area under multiple car wash conditions. It processes the collected pressure data in real time and calculates the median and standard deviation of pressure through statistical analysis algorithms. Traditional methods rely on extreme pressure tests, while the combination of median and standard deviation reveals the real working conditions of key parts of the car under continuous load (median) and dynamic impact (standard deviation), providing a quantitative basis for lightweight design (such as weight reduction in non-critical low-fluctuation areas) and redundancy design (such as structural reinforcement in high-fluctuation areas).

[0045] For example, in the optimization of car door sealing strips (steady-state pressure control), 100 sets of car wash data were collected. The median pressure of the door weld was 2.5 MPa (excluding the highest / lowest 10% extreme values). The optimization solution was to set the sealing strip pressure resistance threshold to the range of 2.5-2.8 MPa (covering 90% of normal operating conditions), avoiding excessive redundancy caused by occasional 4.0 MPa peaks. Material costs were reduced by 18%, and the probability of seal failure was reduced from 5.3% to 0.7%. The standard deviation was used for verification. A standard deviation of 0.12 MPa indicates that the pressure fluctuation is controllable, allowing the use of lightweight TPE materials to replace traditional rubber. For example, in the bumper impact resistance optimization (dynamic fluctuation suppression), the standard deviation of bumper pressure reached 0.41MPa (compared to only 0.08MPa for the roof), indicating a high-frequency impact risk. The optimization solution was to embed a honeycomb aluminum buffer layer in the area with a standard deviation >0.4MPa to disperse impact energy. The median was used to calibrate the design benchmark, and the median of 1.2MPa was used to determine the stiffness requirement of the buffer layer, avoiding energy rebound caused by excessive rigidity. After optimization, the standard deviation was reduced to 0.25MPa, and the paint damage rate decreased by 64%.

[0046] In conjunction with the first aspect, in one embodiment, a data processing unit is connected between the pressure acquisition unit and the data analysis unit. The data processing unit is used to perform signal conditioning, analog-to-digital conversion, and anti-interference processing on the pressure signal from the pressure acquisition unit, and then transmit the standardized data to the data analysis unit.

[0047] In this embodiment, the raw pressure signal transmitted by the pressure acquisition unit is amplified, filtered, and denoised to ensure that the signal quality meets the requirements of subsequent processing. The conditioned analog signal is converted into a digital signal for efficient processing by the data analysis unit. Digital filtering and error correction techniques are used to eliminate environmental noise and interference during signal transmission, improving the accuracy and reliability of the data. The processed data is standardized according to a preset format and transmitted to the data analysis unit to ensure data consistency and analyzability. Through these technical means, the data processing unit achieves efficient processing of the pressure signal, providing high-quality data support for the data analysis unit, thereby improving the overall performance and testing efficiency of the system.

[0048] In conjunction with the first aspect, in one embodiment, an active safety protection unit is connected to the adjustable car wash parameter automatic car wash device and the data analysis unit. The active safety protection unit is used to control and stop the operation of the adjustable car wash parameter automatic car wash device when the pressure data received by the data analysis unit from the pressure acquisition unit exceeds a set threshold or when the pressure acquisition unit malfunctions.

[0049] In this embodiment, the active safety protection unit receives pressure data processed by the data analysis unit in real time and compares it with a preset safety threshold. When the pressure data exceeds the set threshold, the safety protection mechanism is immediately triggered. The active safety protection unit also monitors the working status of the pressure acquisition unit. When a malfunction is detected in the pressure acquisition unit (such as signal loss or abnormal data), the fault response program is automatically activated. In the event of excessive pressure data or a malfunction in the pressure acquisition unit, the active safety protection unit sends a stop command to the adjustable automatic car wash device, immediately terminating the car wash operation and preventing further damage to the vehicle. Through real-time monitoring and a rapid response mechanism, the active safety protection unit significantly improves the safety and reliability of the car wash process, ensuring that the vehicle is protected from the potential risks of high pressure or equipment malfunction during the car wash process. Through the above technical means, the active safety protection unit achieves dynamic monitoring and active protection of the car wash process, effectively ensuring the safety of the vehicle and equipment.

[0050] In conjunction with the first aspect, in one embodiment, the adjustable automatic car wash device includes: a multi-degree-of-freedom robotic arm; a water pump connected to the first end of the multi-degree-of-freedom robotic arm; rotating brushes connected to the second end of the multi-degree-of-freedom robotic arm; a linear drive mechanism equipped with a rotating roller brush 2, which can drive the rotating roller brush 2 to move along the length of the car body; and a controller connected to the multi-degree-of-freedom robotic arm, the water pump, the rotating brushes, the linear drive mechanism, and the rotating roller brush 2.

[0051] In this embodiment, the multi-degree-of-freedom robotic arm provides flexible movement and positioning capabilities, ensuring that the car wash device can cover all areas of the vehicle body. Its multi-degree-of-freedom design supports movement in multiple directions (such as up / down, left / right, forward / backward) to adapt to different vehicle models and curved surfaces. High-precision servo motors and motion control algorithms achieve precise positioning and motion control of the robotic arm. A water pump provides adjustable water pressure to simulate the washing effect under different car wash conditions. Connected to the end of the first robotic arm of the multi-degree-of-freedom robotic arm, it ensures that the water flow is accurately sprayed onto the target area. Equipped with a pressure regulating valve and flow controller, it achieves dynamic adjustment of the spray pressure, covering diverse scenarios from regular washing to extreme high-pressure washing. Rotating brushes simulate the brushing process to clean the vehicle surface. Connected to the end of the second robotic arm of the multi-degree-of-freedom robotic arm, they support rotation and swinging motion to ensure uniform brushing results. An adjustable-speed motor adjusts the brushes according to the car wash conditions. The rotating roller brush 2 is designed to rotate at a controlled speed to avoid damaging the car paint. A linear drive mechanism moves the rotating roller brush 2 along the length of the car body, covering the entire vehicle's washing needs. The roller brush 2, mounted on a linear drive mechanism and driven by a linear guide rail and drive motor, achieves smooth linear movement and supports speed adjustment, ensuring adjustable movement speed and brushing intensity under different working conditions. The rotating roller brush 2 is used for large-area washing operations, improving car washing efficiency. It is mounted on the linear drive mechanism and driven by a rotary motor for efficient washing. Soft bristles are used to avoid scratching the car paint. A controller coordinates and controls the operation of each part of the car wash device, achieving automated car washing. It connects to the multi-degree-of-freedom robotic arm, water pump, rotating brushes, linear drive mechanism, and rotating roller brush 2. It controls the actions of each part through preset programs or real-time commands. An integrated sensor feedback system monitors the device status and washing effect in real time, dynamically adjusting parameters to ensure washing quality. Through these technical means, the adjustable-parameter automatic car wash device achieves efficient, flexible, and safe automated car washing operations, meeting the needs of diverse car washing scenarios.

[0052] In conjunction with the first aspect, in one embodiment, the pressure acquisition unit includes: a thin-film pressure sensor array one, which is arranged on the car door glass via a suction cup and is used to acquire pressure data of the car door glass during the car wash process in real time; and a thin-film pressure sensor array two, which is arranged on the car door via a suction cup and is used to acquire pressure data of the car door during the car wash process in real time.

[0053] In this embodiment, the first thin-film pressure sensor array is fixed to the surface of the car door glass by a suction cup, collecting real-time pressure data on the car door glass during the car wash process. This ensures that the pressure exerted on the glass by the car wash device is within a safe range. A flexible thin-film pressure sensor is used, which can adapt to the curved structure of the car door glass, ensuring the accuracy of data collection. It has high sensitivity and fast response capabilities, and can monitor pressure changes in real time to prevent glass damage due to excessive pressure. The second thin-film pressure sensor array is fixed to the surface of the car door by a suction cup, collecting real-time pressure data on the car door during the car wash process. This ensures that the pressure exerted on the car door by the car wash device is within a reasonable range. A flexible thin-film pressure sensor is also used. The system adapts to the irregular surfaces of car doors, ensuring comprehensive data acquisition. It possesses excellent anti-interference capabilities and can operate stably in complex environments, preventing data distortion caused by environmental factors. Through thin-film pressure sensor arrays one and two, it can acquire real-time pressure data of the car door glass and door, ensuring the safety of the car wash process. The flexible thin-film pressure sensors have high sensitivity and fast response capabilities, accurately capturing pressure changes and preventing damage to the vehicle. The sensors use flexible materials to adapt to the curved structures of car doors and glass, ensuring comprehensive and accurate data acquisition. The sensors can still operate stably in complex environments, ensuring the reliability of data acquisition. Through these technical means, the pressure acquisition unit achieves real-time monitoring of the pressure on the car door glass and door, providing strong assurance for the safety and reliability of the car wash process.

[0054] In conjunction with the first aspect, in one implementation, such as Figure 1 and Figure 2 As shown, the pressure acquisition unit includes: a cylindrical roller 3, which is movably mounted on the rear trunk 1 via a mounting bracket so that it can move downwards along the vehicle height direction when under pressure, and the upper surface of the cylindrical roller 3 is flush with the roof of the vehicle, serving to bear the pressure applied by the adjustable automatic car wash device; and an indirect pressure sensor 4, which is movably mounted on the rear trunk 1 via a suction cup and contacts the lower surface of the cylindrical roller 3. The mounting bracket is not shown in the figure. It is set on the ground, with the vehicle located inside the bracket. Slots are formed on opposite inner sides of the mounting bracket. The two ends of the cylindrical roller 3 are placed in the corresponding slots via flexible pads. When the cylindrical roller 3 is cleaned by the rotating roller brush 2, it slides downwards in the slots, compressing and displacing the flexible pads, thus pressurizing the indirect pressure sensor 4 to collect its pressure signal.

[0055] In this embodiment, the cylindrical roller 3 is movably mounted on the rear trunk 1 via a mounting bracket, with its upper surface flush with the vehicle roof. It bears the pressure applied by the adjustable automatic car wash device, ensuring the stability and uniformity of pressure transmission. The cylindrical design evenly distributes the pressure applied by the car wash device, preventing excessive local pressure. The mounting bracket ensures the roller is flush with the vehicle roof, preventing uneven pressure transmission due to height differences. The indirect pressure sensor 4 is fixed to the rear trunk 1 via a suction cup and contacts the lower surface of the cylindrical roller 3. It collects pressure data on the cylindrical roller 3 in real time, indirectly reflecting the pressure applied to the vehicle roof by the car wash device. This indirect measurement method avoids direct exposure of the sensor to the car wash environment, improving its durability and reliability. The suction cup fixing method facilitates installation and removal while ensuring stable contact between the sensor and the roller. The cylindrical roller 3 design ensures uniform pressure distribution and avoids localized damage to the car roof. The indirect pressure sensor 4 accurately collects pressure data by contacting the lower surface of the roller, ensuring the safety of the car wash process. The suction cup fixing method simplifies the installation and removal of the sensor and improves the maintainability of the equipment. The indirect measurement method avoids the sensor being directly exposed to the car wash environment and directly contacting the rotating roller brush 2, thus extending the sensor's service life.

[0056] In conjunction with the first aspect, in one embodiment, the comprehensive assessment system for environmental pressure tolerance of car wash further includes: a pressure distribution visualization unit, which is connected to the automatic car wash device with adjustable car wash parameters, the pressure acquisition unit, and the data analysis unit. The pressure distribution visualization unit is used to display the pressure distribution of multiple preset areas in real time, which facilitates operators to monitor and adjust the car wash conditions.

[0057] In this embodiment, the pressure distribution visualization unit is connected to the adjustable automatic car wash device, the pressure acquisition unit, and the data analysis unit. It displays the pressure distribution in multiple preset areas in real time, facilitating operator monitoring and adjustment of the car wash process. The graphical interface intuitively displays pressure data, helping operators quickly identify areas of abnormal pressure. It supports multi-area pressure distribution comparison, facilitating optimization of car wash parameters and improving cleaning effectiveness. The pressure data collected in real time by the pressure acquisition unit is processed by the data analysis unit and transmitted to the pressure distribution visualization unit. This visualization unit is linked to the adjustable automatic car wash device, supporting dynamic adjustment of car wash parameters based on pressure distribution. Through the visualization unit, operators can monitor the pressure distribution during the car wash process in real time, ensuring safety. The graphical interface makes pressure data easier to understand and analyze, improving operational efficiency. It supports dynamic adjustment of car wash parameters based on pressure distribution and multi-area pressure distribution comparison, facilitating the identification and resolution of localized pressure anomalies. Through these technical means, the pressure distribution visualization unit achieves real-time monitoring and dynamic adjustment of pressure distribution during the car wash process, providing strong assurance for safety and cleaning effectiveness.

[0058] Secondly, embodiments of this application provide an evaluation method for a comprehensive assessment system for the environmental pressure tolerance of a car wash as described in some of the above embodiments, which includes the following steps:

[0059] S100: The automatic car wash device with adjustable car wash parameters controls the combination parameters of water spray pressure, water flow speed and brushing force to simulate different car wash conditions and simultaneously collect pressure data of multiple preset areas on the outer surface of the vehicle.

[0060] S200: Calculates the median and standard deviation of the preset area under car wash conditions using the data analysis unit.

[0061] In this embodiment, S100 simulates different car wash conditions and collects pressure data. Using an automatic car wash device with adjustable car wash parameters, it controls the combination parameters of water spray pressure, water flow speed, and brushing force to simulate various different car wash conditions. During the simulated car wash process, pressure data of multiple preset areas on the vehicle's outer surface is collected simultaneously to ensure comprehensive and representative data coverage. S200 calculates the median and standard deviation. The data analysis unit receives data from the pressure acquisition unit and calculates the median and standard deviation of the preset areas under multiple car wash conditions. It processes the collected pressure data in real time and calculates the pressure median and standard deviation through statistical analysis algorithms. Traditional methods rely on extreme pressure tests, while the combination of median and standard deviation reveals the real working conditions of key parts of the car under continuous load (median) and dynamic impact (standard deviation), providing a quantitative basis for lightweight design (such as weight reduction in non-critical low-fluctuation areas) and redundant design (such as structural reinforcement in high-fluctuation areas).

[0062] In conjunction with the second aspect, in one implementation, prior to S100, the method further includes:

[0063] S000: The automatic car wash device with adjustable car wash parameters applies a reference pressure to the vehicle surface and performs self-calibration of the pressure acquisition unit to eliminate installation errors.

[0064] In this embodiment, the S000 self-calibrating pressure acquisition unit applies a reference pressure to the vehicle surface using an automatic car wash device with adjustable wash parameters. This ensures the accuracy of the pressure acquisition unit in its initial state. Through the self-calibration process, measurement errors caused by installation position or angle deviations are eliminated, improving the reliability of data acquisition. Self-calibration eliminates installation errors, ensuring more accurate data acquisition in subsequent steps. The self-calibration process provides a stable foundation for subsequent car wash simulation and pressure data acquisition, reducing evaluation bias caused by equipment errors.

[0065] In conjunction with the second aspect, in one implementation, S200 includes:

[0066] S200-1: The data processing unit performs signal conditioning, analog-to-digital conversion, and anti-interference processing on the pressure signal acquired by the pressure acquisition unit, and then transmits the standardized data to the data analysis unit.

[0067] S200-2: Calculate the median and standard deviation of the preset area under car wash conditions using the data analysis unit.

[0068] In this embodiment, S200-1 pressure signal processing and standardized transmission utilizes the data processing unit to condition the pressure signal acquired by the pressure acquisition unit, including amplification and filtering operations, to improve signal quality. The conditioned analog signal is converted into a digital signal for subsequent data analysis and processing. Anti-interference processing is applied to the converted digital signal to eliminate noise and abnormal data, ensuring data accuracy and reliability. The processed standardized data is then transmitted to the data analysis unit, providing a high-quality data foundation for subsequent median and standard deviation calculations. Through signal conditioning and anti-interference processing, the accuracy and stability of the pressure signal are ensured. Standardized data transmission provides high-quality data input to the data analysis unit, improving the reliability of median and standard deviation calculations. Analog-to-digital conversion and standardization simplify the data analysis process and improve overall evaluation efficiency. S200-2 median and standard deviation calculation processes the acquired pressure data to calculate the median for each preset area under multiple car wash conditions, reflecting the typical pressure level of that area. Furthermore, the standard deviation for different car wash conditions is calculated to assess the dispersion of the pressure data and reflect the stability of the car wash conditions. By simulating various car wash conditions and collecting pressure data from multiple areas, the comprehensiveness and representativeness of the evaluation results are ensured. Based on the calculation of median and standard deviation, the typical level and fluctuation of pressure distribution can be accurately reflected, providing a scientific basis for optimizing parameters of key parts of the vehicle. The automated processing of the data analysis unit simplifies the evaluation process and improves evaluation efficiency.

[0069] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0070] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0071] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A comprehensive assessment system for the environmental pressure tolerance of car washes, characterized in that, It includes: The adjustable automatic car wash device controls the water spray pressure, water flow speed, and scrubbing intensity to simulate different car wash conditions. A pressure acquisition unit is deployed in multiple preset areas on the outer surface of the vehicle. The pressure acquisition unit is used to collect pressure data of multiple preset areas in real time during the car wash process. A data analysis unit is connected to the pressure acquisition unit. The data analysis unit is used to receive the pressure data collected by the pressure acquisition unit and calculate the median and standard deviation of the preset area under multiple car wash conditions.

2. The comprehensive assessment system for environmental pressure tolerance of car washes as described in claim 1, characterized in that, The comprehensive assessment system for car wash environmental stress tolerance also includes: A data processing unit is connected between the pressure acquisition unit and the data analysis unit. The data processing unit is used to perform signal conditioning, analog-to-digital conversion and anti-interference processing on the pressure signal from the pressure acquisition unit, and then transmit the standardized data to the data analysis unit.

3. The comprehensive assessment system for environmental pressure tolerance of car washes as described in claim 1, characterized in that, The comprehensive assessment system for car wash environmental stress tolerance also includes: An active safety protection unit is connected to the adjustable automatic car wash device and the data analysis unit. The active safety protection unit is used to control and stop the operation of the adjustable automatic car wash device when the pressure data received by the pressure acquisition unit by the data analysis unit exceeds a set threshold or when the pressure acquisition unit malfunctions.

4. The comprehensive assessment system for environmental pressure tolerance of car washes as described in claim 1, characterized in that, The adjustable automatic car wash device includes: Multi-degree-of-freedom robotic arm; A water pump is connected to the end of the first robotic arm of the multi-degree-of-freedom robotic arm; Rotating bristles, which are connected to the end of the second robotic arm of the multi-degree-of-freedom robotic arm; A linear drive mechanism is provided, wherein a rotating roller brush is mounted on the linear drive mechanism, and the linear drive mechanism can drive the rotating roller brush to move along the length direction of the vehicle body; The controller is connected to the multi-degree-of-freedom robotic arm, the water pump, the rotating brush, the linear drive mechanism, and the rotating roller brush.

5. The comprehensive assessment system for environmental pressure tolerance of car washes as described in claim 1, characterized in that, The pressure acquisition unit includes: A thin-film pressure sensor array one is arranged on the car door glass via a suction cup, which is used to collect pressure data on the car door glass in real time during the car washing process. A second thin-film pressure sensor array is arranged on the car door via a suction cup and is used to collect pressure data on the car door in real time during the car wash process.

6. The comprehensive assessment system for environmental pressure tolerance of car washes as described in claim 1, characterized in that, The pressure acquisition unit includes: A cylindrical roller is movably mounted in the rear trunk via a mounting bracket, and the upper surface of the cylindrical roller is flush with the roof of the vehicle. It is used to bear the pressure applied by the automatic car wash device with adjustable car wash parameters. An indirect pressure sensor is movably mounted in the rear tail box via a suction cup and contacts the lower surface of the cylindrical roller.

7. The comprehensive assessment system for environmental pressure tolerance of car washes as described in claim 1, characterized in that, The comprehensive assessment system for car wash environmental stress tolerance also includes: The pressure distribution visualization unit is connected to the automatic car wash device with adjustable car wash parameters, the pressure acquisition unit, and the data analysis unit. The pressure distribution visualization unit is used to display the pressure distribution of multiple preset areas in real time, which facilitates operators to monitor and adjust the car wash conditions.

8. An evaluation method for a comprehensive evaluation system for environmental pressure tolerance of car washes as described in any one of claims 1-7, characterized in that, It includes the following steps: The automatic car wash device with adjustable car wash parameters controls the combination of spray pressure, water flow speed and scrubbing force to simulate different car wash conditions and simultaneously collect pressure data from multiple preset areas on the vehicle's outer surface. The data analysis unit was used to calculate the median and standard deviation of the preset area under multiple car wash conditions.

9. The evaluation method of the comprehensive evaluation system for environmental pressure tolerance of car washes as described in claim 8, characterized in that, It includes the following steps: Before using the adjustable automatic car wash device to control the combination parameters of water spray pressure, water flow speed, and scrubbing intensity to simulate different car wash conditions and simultaneously collect pressure data from multiple preset areas on the vehicle's outer surface, the method further includes: An automatic car wash device with adjustable wash parameters applies a reference pressure to the vehicle surface, and the pressure acquisition unit is self-calibrated to eliminate installation errors.

10. The evaluation method of the comprehensive evaluation system for environmental pressure tolerance of car washes as described in claim 8, characterized in that, It includes the following steps: The calculation of the median and standard deviation of the preset area under multiple car wash conditions using the data analysis unit includes: The data processing unit performs signal conditioning, analog-to-digital conversion, and anti-interference processing on the pressure signal acquired by the pressure acquisition unit, and then transmits the standardized data to the data analysis unit. The median and standard deviation of the preset area under multiple car wash conditions were calculated using the data analysis unit.

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