Automobile user manual embedding diagnosis system

Abstract

The invention, which relates to the technical field of vehicle electronics, discloses an automobile user manual embedding diagnosis system comprising a storage module, an information acquisition module, an information processing module, a display module and a communication module. The storage module is used for storing an electronic document of an automobile user manual, and the automobile user manual comprises automobile operation information, fault diagnosis information, maintenance information and part information; the information acquisition module is used for acquiring real-time state information of the automobile. According to the automobile user manual embedding diagnosis system provided by the invention, the combination of electronic embedding and real-time diagnosis functions of the automobile user manual is realized by integrating a plurality of modules, so that a user can access operation information, fault diagnosis information, maintenance information and part information related to an automobile anytime and anywhere; the convenience and accuracy of information acquisition are greatly improved, so that the requirements and scenes of different users are met, and remote operation and updating of the users are facilitated.

Description

Technical Field

[0001] This invention relates to the field of vehicle electronics technology, specifically to a diagnostic system embedded in a car owner's manual. Background Technology

[0002] With the rapid development of the automotive manufacturing industry, the diversity of car brands and models on the market has increased significantly, and the application of intelligent technologies is becoming increasingly widespread. While this trend provides consumers with more choices and convenience, it also brings a series of new challenges, especially for ordinary users and automotive repair personnel. Modern cars integrate numerous complex electronic control systems and intelligent functions, making vehicle operation and maintenance more complex than traditional cars. Therefore, accurately understanding and effectively operating these advanced functions has become a major challenge for users.

[0003] Traditionally, when users encounter questions or malfunctions in their vehicles, the owner's manual provided by the car manufacturer is the primary reference resource for problem-solving. The owner's manual details various vehicle functions, operating procedures, and troubleshooting methods, making it highly valuable to users. However, in actual use, obtaining and storing the owner's manual often becomes an obstacle. On the one hand, many users haven't developed the habit of properly storing their owner's manuals, leading to their easy loss or damage. On the other hand, as time passes after purchasing the vehicle, the owner's manual may become worn due to frequent use, making the information difficult to read. Some users may not have even received or fully valued this important document when they first purchased the car. Furthermore, when the owner's manual is not readily available, users often feel helpless when faced with unexpected vehicle operation problems or malfunctions, forcing them to rely on internet searches or seek help from professional repair services. This may not only delay problem-solving but also increase unnecessary costs. For automotive repair personnel, the lack of readily available official operating guidelines may also affect repair efficiency and accuracy. To address this, we propose a diagnostic system embedded in the vehicle owner's manual. Summary of the Invention

[0004] To solve the above-mentioned technical problems, a diagnostic system embedded in the car owner's manual is provided. This technical solution solves the above problems.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A vehicle user manual embedded diagnostic system includes: a storage module, an information acquisition module, an information processing module, a display module, and a communication module;

[0007] The storage module is used to store electronic documents of the vehicle owner's manual, which includes vehicle operation information, fault diagnosis information, maintenance information and parts information;

[0008] The information acquisition module is used to collect real-time status information of the vehicle, including but not limited to vehicle speed, RPM, oil temperature, coolant temperature and fault codes;

[0009] The information processing module is electrically connected to the storage module and the information acquisition module. The information processing module is used to search for the corresponding user manual information in the storage module based on the real-time status information collected by the information acquisition module, and send the processing result to the display module.

[0010] The display module is used to display the information processed by the information processing module;

[0011] The communication module is used to enable information exchange between the system and external devices, including receiving update information from external devices and updating the user manual in the storage module.

[0012] Preferably, the storage module also stores user manuals for different car models, and the user manuals for different car models are stored in categories according to the model, year, and configuration information of the car model;

[0013] The storage module contains index information. When the information acquisition module collects the vehicle identification number (VIN) information, the information processing module looks up the corresponding vehicle model owner's manual in the index of the storage module based on the VIN information. The calculation formula is as follows:

[0014]

[0015] In the formula, Indicates the time required for the search. Indicates the number of user manuals stored. This represents the lookup coefficient, which is related to the storage structure and lookup algorithm of the storage module.

[0016] The information processing module uses index information to quickly filter relevant user manual content from the storage module based on user operation requests and real-time vehicle status information, avoiding the output of incorrect information due to vehicle model confusion.

[0017] The storage module features data redundancy backup, employing a multi-replica storage method. When one replica fails, the system automatically switches to another replica, ensuring the integrity and availability of the user manual information. Its data integrity probability is:

[0018] In the formula, Indicates the probability of data integrity. This represents the probability that a single replica is functioning correctly. Indicates the number of copies.

[0019] Preferably, the information acquisition module includes: a speed sensing unit, a rotational speed sensing unit, an oil temperature and water temperature sensing unit, and a fault code acquisition unit.

[0020] The speed sensing unit is used to collect the vehicle's speed. Its working principle is to measure the rotational speed of the wheels and calculate the vehicle speed based on the wheel's circumference and the number of rotations per unit time.

[0021]

[0022] In the formula, Indicates vehicle speed. Indicates the circumference of the wheel. Indicates the number of rotations per unit time;

[0023] The speed sensor unit is used to collect the engine speed. By measuring the rotational frequency of the engine crankshaft and combining it with the structural parameters of the crankshaft, the engine speed is calculated.

[0024] In the formula, Indicates engine speed. This represents a coefficient related to the crankshaft structure. Indicates the rotational frequency of the engine crankshaft;

[0025] The oil and coolant temperature sensing units measure the temperatures of the engine oil and coolant respectively. Based on the relationship between the resistance of a thermistor and temperature, temperature information is obtained by measuring the resistance value. The expression for the thermistor's resistance changing with temperature is as follows:

[0026]

[0027] In the formula, This indicates the resistance value of the thermistor. Indicates temperature. This indicates the resistance value of the thermistor at standard temperature. This indicates the temperature coefficient of the thermistor;

[0028] The fault code acquisition unit is connected to the vehicle's electronic control unit. When the vehicle's electronic control unit detects a fault, it generates a corresponding fault code. The fault code acquisition unit collects the fault code and sends it to the information processing module. The information processing module searches for the corresponding fault handling information in the storage module based on the fault code, providing repair personnel with accurate repair guidance.

[0029] Preferably, the information processing module includes a data filtering unit, a data parsing unit, and a data matching unit;

[0030] The data filtering unit is used to perform preliminary filtering of the user manual content in the storage module based on the information collected by the information collection module, and to filter out some information related to the current vehicle status. Its filtering algorithm is based on keyword matching of information and numerical range judgment of vehicle status.

[0031] The data parsing unit parses the filtered user manual information, transforming the text information into structured information that is easier for the display module to show, such as converting long paragraphs of text description into lists or tables.

[0032] The data matching unit accurately matches the parsed information with the user's operational needs and the vehicle's real-time status. The matching degree is calculated using a similarity calculation algorithm. Let the user's need information vector be... The filtered information vector is The similarity is:

[0033]

[0034] In the formula, This indicates the similarity score. When the similarity score reaches a set threshold, it indicates a successful match, and the successful match information is sent to the display module.

[0035] Preferably, the display module is a touch screen display with split-screen display function;

[0036] When displaying user manual information, the information can be divided into a main display area and a secondary display area according to the importance of the information and the user's operating habits;

[0037] The display module also has a voice playback function. For users with poor eyesight or in low-light environments, users can turn on the voice playback function, which will convert the displayed user manual information into a voice signal output through voice synthesis technology. During the voice synthesis process, the tone, speed and volume of the voice are adjusted according to different information types.

[0038] Meanwhile, the display module supports user zooming, rotation, and marking operations on the displayed content, making it convenient for users to view and use information. Users can zoom the displayed content through touch operations, with zoom ratios as follows:

[0039]

[0040] In the formula, Indicates the scaling ratio. Indicates the distance the user touches and swipes. This indicates the scaling factor.

[0041] Preferably, the communication module supports multiple communication protocols, including but not limited to Bluetooth, Wi-Fi, and wired Ethernet protocols;

[0042] When using the Bluetooth protocol, the communication module connects to the user's mobile device, allowing the user to remotely operate the system via an application on their mobile device. Remote operations include, but are not limited to, updating the user manual and viewing vehicle information. The Bluetooth transmission rate is calculated using the following formula:

[0043]

[0044] In the formula, Indicates Bluetooth transmission rate. Indicates Bluetooth bandwidth. Indicates the signal-to-noise ratio of the Bluetooth signal;

[0045] When using the Wi-Fi protocol, the communication module connects to the wireless network, enabling the system to connect to the car manufacturer's server. The car manufacturer pushes the latest user manual information and diagnostic program updates to the system. The Wi-Fi transmission rate is calculated using the following formula:

[0046]

[0047] In the formula, Indicates Wi-Fi transmission rate. Indicates Wi-Fi bandwidth. Indicates the signal-to-noise ratio of a Wi-Fi signal;

[0048] When using the wired Ethernet protocol, the system can connect to the network system of the repair shop, making it convenient for repair personnel to share vehicle information to the shop's information management system, thereby achieving centralized management and maintenance of vehicle information.

[0049] Preferably, user permissions are divided into ordinary user permissions and professional maintenance personnel permissions;

[0050] Regular users can only view and operate the owner's manual content related to the daily use of the car, including vehicle operation instructions and routine maintenance information. When a regular user performs an operation beyond their authorized scope, such as attempting to modify the system's diagnostic program or view advanced repair information, the system will prompt that the user does not have sufficient permissions.

[0051] Professional repair personnel have access to view all information within the operating system, including complex fault diagnosis and repair information. The user access management module determines permissions based on the user's login information, which can be obtained through password input, fingerprint recognition, or iris recognition. Different recognition methods correspond to different security levels. Let's assume the security level for password input is [insert security level here]. The security level of fingerprint recognition is The security level of iris recognition is ,and Users can choose different login methods according to their own needs, and the system grants corresponding permissions based on the user's security level.

[0052] Preferably, the system periodically performs status checks on its various modules;

[0053] For storage modules, monitor their storage capacity usage; when the storage capacity utilization exceeds a threshold... When this happens, the system will prompt you to expand storage. The storage capacity utilization rate will be calculated as follows:

[0054]

[0055] In the formula, Indicates storage capacity utilization. Indicates the used storage capacity. Total storage capacity;

[0056] For the information acquisition module, the working status of the sensor is checked. The sensor is judged to be working properly by sending test signals to the sensor and receiving feedback signals. For the temperature sensor, analog signals of different temperatures are sent and the sensor's feedback signals are used to determine whether it accurately measures the temperature.

[0057] For the information processing module, its processing performance is tested based on the time delay of information processing. To evaluate processing performance, when At that time, among them If the system detects a malfunction in the information processing module, it will indicate that the processing module may be faulty.

[0058] For the display module, check its display effect, including: checking whether the screen resolution, brightness and color display are normal;

[0059] For the communication module, its connectivity performance is tested by sending and receiving test data packets and analyzing the packet loss rate. To determine the connection quality of the communication module, when At that time, among them The system will indicate a problem with the communication module if the maximum allowable packet loss rate is reached.

[0060] Preferably, during the use of the system, the user provides feedback information to the car manufacturer or system developer through the communication module. The feedback information includes the user's suggestions on the content of the user manual, difficulties in operating the system, and system fault information.

[0061] The communication module stores user feedback information in a specific area of ​​the storage module and sends it to the car manufacturer or system developer. At the same time, the user feedback module categorizes user feedback information into user manual content, system operation, and system fault categories. For different types of feedback information, the system will provide users with different feedback templates, and users will fill in the feedback content according to the templates.

[0062] Car manufacturers or system developers update and improve user manuals and optimize and improve systems based on user feedback. The system prioritizes user feedback based on frequency and importance, assuming the importance of user feedback is 1. The feedback frequency is The priority is:

[0063]

[0064] In the formula, Indicates priority. This indicates the priority coefficient.

[0065] Preferably, the user manual information and vehicle information in the storage module are encrypted to prevent information leakage;

[0066] A combination of symmetric and asymmetric encryption algorithms is used. For core technical information in vehicle diagnostics and user manuals, asymmetric encryption is employed.

[0067] The public key is The private key is The information encryption formula is:

[0068]

[0069] In the formula, This indicates the encrypted information. Represents the original information;

[0070] For ordinary user manual information and vehicle status information, a symmetric encryption algorithm is used:

[0071] Use key The information is encrypted using the following encryption function:

[0072]

[0073] The data encryption module automatically encrypts information during storage and transmission. When the information processing module reads the information, it decrypts the encrypted information to ensure the security and confidentiality of the information and prevent unauthorized users from obtaining important information by tampering with the system or intercepting communication data.

[0074] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0075] This invention proposes an embedded diagnostic system for automotive user manuals. By integrating multiple modules, it combines the electronic embedding of automotive user manuals with real-time diagnostic functions. This allows users to access vehicle-related operational information, fault diagnosis information, maintenance information, and parts information anytime, anywhere, greatly improving the convenience and accuracy of information retrieval. User manuals for different vehicle models are categorized and stored, and the system allows for quick retrieval of the corresponding model's user manual using the vehicle identification number (VIN), avoiding erroneous information output due to model confusion. Users can obtain user manual content perfectly matching their own vehicle. The system can quickly filter relevant user manual content based on real-time vehicle status information and user operation requests, and provides multiple display methods to meet the needs and scenarios of different users. It supports multiple communication protocols, achieving seamless connection and information interaction with external devices, facilitating remote operation and updates. By setting permissions for ordinary users and professional repair personnel, the system ensures that different users can only access information content matching their identity, effectively preventing information leakage and misuse. A combination of symmetric and asymmetric encryption algorithms is used to encrypt user manual and vehicle information in the storage module, further enhancing information security and confidentiality. Attached Figure Description

[0076] Figure 1 Embed a diagnostic system framework diagram in the vehicle owner's manual. Detailed Implementation

[0077] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0078] Reference Figure 1 As shown, a car owner's manual embedded diagnostic system includes: a storage module, an information acquisition module, an information processing module, a display module, and a communication module;

[0079] In intelligent vehicle management systems, the storage module plays a crucial role, specifically storing electronic versions of the vehicle's owner's manual. These documents cover a wealth of vehicle-related information, such as operational information that provides detailed guidance on proper driving and operation; fault diagnosis information to help users quickly identify abnormal vehicle conditions; maintenance information to provide a basis for regular vehicle maintenance; and component information, enabling users to have a clear understanding of each component of the vehicle.

[0080] The information acquisition module constantly monitors the vehicle's real-time status. The information it collects is very extensive, including not only common data such as vehicle speed, RPM, oil temperature, coolant temperature, and fault codes, but also other information that helps to fully understand the vehicle's operating status.

[0081] The information processing module, acting as the system's "intelligent brain," is electrically connected to the storage module and the information acquisition module. Based on the real-time status information transmitted from the information acquisition module, it quickly searches for matching content in the massive manual information in the storage module and sends the processed and accurate results to the display module.

[0082] The display module clearly presents the received information to the user, allowing them to intuitively understand the vehicle's status. Furthermore, the communication module is responsible for enabling information exchange between the system and external devices. For example, it receives update information pushed by external devices and promptly updates the user manual in the storage module, ensuring that the information the user receives is always the latest and most accurate.

[0083] The storage module integrates rich information, allowing users to access operation and troubleshooting information anytime without having to consult heavy paper manuals. The information acquisition module monitors vehicle status in real time, providing a basis for accurate judgment. The information processing module quickly matches and searches, accurately pushing useful information. The display module presents information intuitively, making it easy for users to quickly understand. The communication module can update the user manual in a timely manner, ensuring information timeliness. The entire system enables car owners to understand vehicle status more conveniently, effectively prevent and handle faults, improve driving safety and vehicle maintenance efficiency, and optimize the user's car usage experience.

[0084] The storage module also stores user manuals for different car models, and the user manuals for different car models are classified and stored according to the model, year, and configuration information of the car model.

[0085] The storage module contains index information. When the information acquisition module collects the vehicle identification number (VIN) information, the information processing module looks up the corresponding vehicle model owner's manual in the index of the storage module based on the VIN information. The calculation formula is as follows:

[0086]

[0087] In the formula, Indicates the time required for the search. Indicates the number of user manuals stored. This represents the lookup coefficient, which is related to the storage structure and lookup algorithm of the storage module.

[0088] The information processing module uses index information to quickly filter relevant user manual content from the storage module based on user operation requests and real-time vehicle status information, avoiding the output of incorrect information due to vehicle model confusion.

[0089] The storage module features data redundancy backup, employing a multi-replica storage method. When one replica fails, the system automatically switches to another replica, ensuring the integrity and availability of the user manual information. Its data integrity probability is:

[0090]

[0091] In the formula, Indicates the probability of data integrity. This represents the probability that a single replica is functioning correctly. Indicates the number of copies.

[0092] The manuals are categorized and stored by vehicle model, model year, and configuration for easy and accurate location. A VIN matching lookup formula, based on algorithms and storage structure, quickly locates the corresponding vehicle model's manual, significantly reducing search time. Indexing combined with operation requests and real-time status filtering avoids vehicle model confusion and outputs incorrect information, ensuring information accuracy. A robust multi-copy redundancy backup function, based on a data integrity probability calculation formula, ensures that even if a single copy fails, the system automatically switches, guaranteeing that manual information is always complete and available. This greatly improves system stability and reliability, allowing users to access accurate and complete vehicle manual information at any time.

[0093] The information acquisition module includes: a speed sensing unit, a rotational speed sensing unit, an oil temperature and water temperature sensing unit, and a fault code acquisition unit.

[0094] The speed sensing unit is used to collect the vehicle's speed. Its working principle is to measure the rotational speed of the wheels and calculate the vehicle speed based on the wheel's circumference and the number of rotations per unit time.

[0095]

[0096] In the formula, Indicates vehicle speed. Indicates the circumference of the wheel. Indicates the number of rotations per unit time;

[0097] The speed sensor unit is used to collect the engine speed. By measuring the rotational frequency of the engine crankshaft and combining it with the structural parameters of the crankshaft, the engine speed is calculated.

[0098]

[0099] In the formula, Indicates engine speed. This represents a coefficient related to the crankshaft structure. Indicates the rotational frequency of the engine crankshaft;

[0100] The oil and coolant temperature sensing units measure the temperatures of the engine oil and coolant respectively. Based on the relationship between the resistance of a thermistor and temperature, temperature information is obtained by measuring the resistance value. The expression for the thermistor's resistance changing with temperature is as follows:

[0101]

[0102] In the formula, This indicates the resistance value of the thermistor. Indicates temperature. This indicates the resistance value of the thermistor at standard temperature. This indicates the temperature coefficient of the thermistor;

[0103] The fault code acquisition unit is connected to the vehicle's electronic control unit. When the vehicle's electronic control unit detects a fault, it generates a corresponding fault code. The fault code acquisition unit collects the fault code and sends it to the information processing module. The information processing module searches for the corresponding fault handling information in the storage module based on the fault code, providing repair personnel with accurate repair guidance.

[0104] Speed ​​and RPM sensors, through scientifically calculated methods, accurately acquire vehicle speed and engine RPM information, allowing the driver to clearly understand the vehicle's operating status. Oil and coolant temperature sensors utilize the characteristics of thermistors to accurately measure engine oil and coolant temperatures, promptly detecting abnormalities and preventing engine damage due to overheating or other malfunctions. The fault code acquisition unit, connected to the electronic control unit, quickly acquires codes upon detecting a fault, assisting the information processing module in rapidly locating fault information and providing precise guidance to maintenance personnel. This significantly improves maintenance efficiency, ensures safe and stable vehicle operation, and comprehensively enhances the driving experience and vehicle reliability.

[0105] The information processing module includes a data filtering unit, a data parsing unit, and a data matching unit;

[0106] The data filtering unit is used to perform preliminary filtering of the user manual content in the storage module based on the information collected by the information collection module, and to filter out some information related to the current vehicle status. Its filtering algorithm is based on keyword matching of information and numerical range judgment of vehicle status.

[0107] The data parsing unit parses the filtered user manual information, transforming the text information into structured information that is easier for the display module to show, such as converting long paragraphs of text description into lists or tables.

[0108] The data matching unit accurately matches the parsed information with the user's operational needs and the vehicle's real-time status. The matching degree is calculated using a similarity calculation algorithm. Let the user's need information vector be... The filtered information vector is The similarity is:

[0109]

[0110] In the formula, This indicates the similarity score. When the similarity score reaches a set threshold, it indicates a successful match, and the successful match information is sent to the display module.

[0111] The data filtering unit uses keyword matching and numerical range judgment algorithms to quickly locate information relevant to the vehicle's current status from massive amounts of manual content, significantly reducing interference from irrelevant information. The data parsing unit cleverly transforms the filtered text information into list or table formats, enhancing readability and allowing users to intuitively obtain key content. The data matching unit uses a similarity calculation algorithm to accurately match user operation needs with real-time status information; when the similarity exceeds a threshold, a successful match is determined, efficiently pushing information that meets the user's needs. All units work together to provide users with accurate, clear, and tailored automotive manual information, optimizing the user's information acquisition experience.

[0112] The display module is a touch screen with split-screen display functionality;

[0113] When displaying user manual information, the information can be divided into a main display area and a secondary display area according to the importance of the information and the user's operating habits;

[0114] The display module also has a voice playback function. For users with poor eyesight or in low-light environments, users can turn on the voice playback function, which will convert the displayed user manual information into a voice signal output through voice synthesis technology. During the voice synthesis process, the tone, speed and volume of the voice are adjusted according to different information types.

[0115] Meanwhile, the display module supports user zooming, rotation, and marking operations on the displayed content, making it convenient for users to view and use information. Users can zoom the displayed content through touch operations, with zoom ratios as follows:

[0116]

[0117] In the formula, Indicates the scaling ratio. Indicates the distance the user touches and swipes. This indicates the scaling factor.

[0118] The touchscreen's split-screen function divides information into sections based on importance and user habits, clearly prioritizing key content for quick retrieval. The voice playback function considers special scenarios and users with visual impairments, providing clear audio output by adjusting tone, speed, and volume. Furthermore, it supports touch operations such as zooming, rotating, and marking, allowing users to flexibly adjust the displayed content for the most comfortable viewing experience. Whether viewing details or making important annotations, it's all easily achieved, greatly enhancing the user experience.

[0119] The communication module supports multiple communication protocols, including but not limited to Bluetooth, Wi-Fi, and wired Ethernet protocols;

[0120] When using the Bluetooth protocol, the communication module connects to the user's mobile device, allowing the user to remotely operate the system via an application on their mobile device. Remote operations include, but are not limited to, updating the user manual and viewing vehicle information. The Bluetooth transmission rate is calculated using the following formula:

[0121]

[0122] In the formula, Indicates Bluetooth transmission rate. Indicates Bluetooth bandwidth. Indicates the signal-to-noise ratio of the Bluetooth signal;

[0123] When using the Wi-Fi protocol, the communication module connects to the wireless network, enabling the system to connect to the car manufacturer's server. The car manufacturer pushes the latest user manual information and diagnostic program updates to the system. The Wi-Fi transmission rate is calculated using the following formula:

[0124]

[0125] In the formula, Indicates Wi-Fi transmission rate. Indicates Wi-Fi bandwidth. Indicates the signal-to-noise ratio of a Wi-Fi signal;

[0126] When using the wired Ethernet protocol, the system can connect to the network system of the repair shop, making it convenient for repair personnel to share vehicle information to the shop's information management system, thereby achieving centralized management and maintenance of vehicle information.

[0127] The communication module's support for multiple protocols greatly expands the application scenarios for embedding vehicle owner manuals into diagnostic systems. Bluetooth allows users to remotely operate the system via mobile devices, conveniently updating manuals and viewing vehicle information. Wi-Fi enables connection to the vehicle manufacturer's server, receiving timely updates to the latest manuals and diagnostic programs. Wired Ethernet facilitates the sharing of vehicle information by repair personnel with the workshop management system, enabling centralized management and maintenance. This comprehensively enhances the system's interactivity, information timeliness, and vehicle repair management efficiency.

[0128] User permissions are divided into ordinary user permissions and professional maintenance personnel permissions;

[0129] Regular users can only view and operate the owner's manual content related to the daily use of the car, including vehicle operation instructions and routine maintenance information. When a regular user performs an operation beyond their authorized scope, such as attempting to modify the system's diagnostic program or view advanced repair information, the system will prompt that the user does not have sufficient permissions.

[0130] Professional repair personnel have access to view all information within the operating system, including complex fault diagnosis and repair information. The user access management module determines permissions based on the user's login information, which can be obtained through password input, fingerprint recognition, or iris recognition. Different recognition methods correspond to different security levels. Let's assume the security level for password input is [insert security level here]. The security level of fingerprint recognition is The security level of iris recognition is ,and Users can choose different login methods according to their own needs, and the system grants corresponding permissions based on the user's security level.

[0131] It differentiates between the permissions of ordinary users and professional maintenance personnel. Ordinary users can only access content relevant to daily use, preventing system problems caused by accidental operations and ensuring the safe and stable operation of the system. Professional maintenance personnel, on the other hand, can access all information to meet their maintenance needs. Multiple login methods correspond to different security levels, allowing users to choose according to their needs, which is both convenient and ensures information security. Through precise permission judgment, different users can operate within the appropriate permissions, improving the standardization and security of system use.

[0132] The system periodically performs status checks on its various modules.

[0133] For storage modules, monitor their storage capacity usage; when the storage capacity utilization exceeds a threshold... When this happens, the system will prompt you to expand storage. The storage capacity utilization rate will be calculated as follows:

[0134]

[0135] In the formula, Indicates storage capacity utilization. Indicates the used storage capacity. Total storage capacity;

[0136] For the information acquisition module, the working status of the sensor is checked. The sensor is judged to be working properly by sending test signals to the sensor and receiving feedback signals. For the temperature sensor, analog signals of different temperatures are sent and the sensor's feedback signals are used to determine whether it accurately measures the temperature.

[0137] For the information processing module, its processing performance is tested based on the time delay of information processing. To evaluate processing performance, when At that time, among them If the system detects a malfunction in the information processing module, it will indicate that the processing module may be faulty.

[0138] For the display module, check its display effect, including: checking whether the screen resolution, brightness and color display are normal;

[0139] For the communication module, its connectivity performance is tested by sending and receiving test data packets and analyzing the packet loss rate. To determine the connection quality of the communication module, when At that time, among them The system will indicate a problem with the communication module if the maximum allowable packet loss rate is reached.

[0140] By monitoring the storage module's capacity utilization, users can be promptly alerted to expand storage, preventing data loss or system malfunctions due to insufficient capacity. Sensor monitoring of the information acquisition module ensures accurate and reliable data collection, providing valuable data for subsequent analysis. Evaluating the processing performance of the information processing module allows for the timely detection of potential faults, ensuring efficient information processing. Testing the display module's display quality provides users with a superior visual experience. Testing the communication module's connectivity performance guarantees stable data transmission and reduces the risk of data loss. Comprehensive monitoring ensures the system remains in optimal operating condition, enhancing user experience and system reliability.

[0141] During system use, users provide feedback to car manufacturers or system developers through the communication module. This feedback includes user suggestions on the user manual, difficulties encountered in system operation, and system malfunction information.

[0142] The communication module stores user feedback information in a specific area of ​​the storage module and sends it to the car manufacturer or system developer. At the same time, the user feedback module categorizes user feedback information into user manual content, system operation, and system fault categories. For different types of feedback information, the system will provide users with different feedback templates, and users will fill in the feedback content according to the templates.

[0143] Car manufacturers or system developers update and improve user manuals and optimize and improve systems based on user feedback. The system prioritizes user feedback based on frequency and importance, assuming the importance of user feedback is 1. The feedback frequency is The priority is:

[0144]

[0145] In the formula, Indicates priority. This indicates the priority coefficient.

[0146] Preferably, the user manual information and vehicle information in the storage module are encrypted to prevent information leakage;

[0147] A combination of symmetric and asymmetric encryption algorithms is used. For core technical information in vehicle diagnostics and user manuals, asymmetric encryption is employed.

[0148] The public key is The private key is The information encryption formula is:

[0149]

[0150] In the formula, This indicates the encrypted information. Represents the original information;

[0151] For ordinary user manual information and vehicle status information, a symmetric encryption algorithm is used:

[0152] Use key The information is encrypted using the following encryption function:

[0153]

[0154] The data encryption module automatically encrypts information during storage and transmission. When the information processing module reads the information, it decrypts the encrypted information to ensure the security and confidentiality of the information and prevent unauthorized users from obtaining important information by tampering with the system or intercepting communication data.

[0155] The feedback module categorizes and provides templates, facilitating accurate user feedback. Automakers and developers can then use this information to optimize systems and user manuals, improving product quality. Prioritization allows critical feedback to be processed first, increasing improvement efficiency. Information encryption is also crucial. Combining symmetric and asymmetric encryption algorithms, different types of information are specifically encrypted. Encryption occurs automatically during storage and transmission, and decryption occurs upon retrieval, greatly enhancing information security, effectively preventing information leakage and unauthorized tampering, protecting user privacy and vehicle information security, and giving users peace of mind when using the system.

[0156] The usage process of this invention is as follows: Through this system, users can easily access electronic versions of their vehicle's owner's manual, which contains detailed information on vehicle operation, fault diagnosis, maintenance, and parts. The system can collect real-time vehicle status information, such as speed, RPM, oil temperature, coolant temperature, and fault codes, and then search for the corresponding content in the stored owner's manual based on this information. Users can view this information via a touchscreen display. The system also supports voice playback, making it convenient for users with poor eyesight or in low-light conditions. Furthermore, users can provide feedback to vehicle manufacturers or system developers through the communication module to optimize system performance.

[0157] In summary, the advantages of this invention are as follows: The system digitizes the vehicle owner's manual, allowing users to easily access and obtain accurate vehicle information at any time, solving the problems of traditional paper manuals being easily lost and difficult to preserve. Simultaneously, the system can collect vehicle fault information in real time and provide corresponding fault diagnosis and repair suggestions, improving the efficiency and accuracy of vehicle repair. Furthermore, the system supports multiple communication protocols, enabling remote updates and data interaction with the vehicle manufacturer's server, ensuring the timeliness and accuracy of the owner's manual content. User-friendly designs such as the touchscreen display and voice playback function enhance the user experience.

[0158] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A diagnostic system embedded in a car owner's manual, characterized in that, include: Storage module, information acquisition module, information processing module, display module, and communication module; The storage module is used to store electronic documents of the vehicle owner's manual, which includes vehicle operation information, fault diagnosis information, maintenance information and parts information; The information acquisition module is used to collect real-time status information of the vehicle, including but not limited to vehicle speed, RPM, oil temperature, coolant temperature and fault codes; The information processing module is electrically connected to the storage module and the information acquisition module. The information processing module is used to search for the corresponding user manual information in the storage module based on the real-time status information collected by the information acquisition module, and send the processing result to the display module. The display module is used to display the information processed by the information processing module; The communication module is used to enable information exchange between the system and external devices, including receiving update information from external devices and updating the user manual in the storage module.

2. The vehicle owner's manual embedded diagnostic system according to claim 1, characterized in that, The storage module also stores user manuals for different car models, and the user manuals for different car models are classified and stored according to the model, year, and configuration information of the car model. The storage module contains index information. When the information acquisition module collects the vehicle identification number (VIN) information, the information processing module looks up the corresponding vehicle model owner's manual in the index of the storage module based on the VIN information. The calculation formula is as follows: In the formula, Indicates the time required for the search. Indicates the number of user manuals stored. This represents the lookup coefficient, which is related to the storage structure and lookup algorithm of the storage module. The information processing module uses index information to quickly filter relevant user manual content from the storage module based on user operation requests and real-time vehicle status information, avoiding the output of incorrect information due to vehicle model confusion. The storage module features data redundancy backup, employing a multi-replica storage method. When one replica fails, the system automatically switches to another replica, ensuring the integrity and availability of the user manual information. Its data integrity probability is: In the formula, Indicates the probability of data integrity. This represents the probability that a single replica is functioning correctly. Indicates the number of copies.

3. The vehicle owner's manual embedded diagnostic system according to claim 1, characterized in that, The information acquisition module includes: a speed sensing unit, a rotational speed sensing unit, an oil temperature and water temperature sensing unit, and a fault code acquisition unit. The speed sensing unit is used to collect the vehicle's speed. Its working principle is to measure the rotational speed of the wheels and calculate the vehicle speed based on the wheel's circumference and the number of rotations per unit time. In the formula, Indicates vehicle speed. Indicates the circumference of the wheel. Indicates the number of rotations per unit time; The speed sensor unit is used to collect the engine speed. By measuring the rotational frequency of the engine crankshaft and combining it with the structural parameters of the crankshaft, the engine speed is calculated. In the formula, Indicates engine speed. This represents a coefficient related to the crankshaft structure. Indicates the rotational frequency of the engine crankshaft; The oil and coolant temperature sensing units measure the temperatures of the engine oil and coolant respectively. Based on the relationship between the resistance of a thermistor and temperature, temperature information is obtained by measuring the resistance value. The expression for the thermistor's resistance changing with temperature is as follows: In the formula, This indicates the resistance value of the thermistor. Indicates temperature. This indicates the resistance value of the thermistor at standard temperature. This indicates the temperature coefficient of the thermistor; The fault code acquisition unit is connected to the vehicle's electronic control unit. When the vehicle's electronic control unit detects a fault, it generates a corresponding fault code. The fault code acquisition unit collects the fault code and sends it to the information processing module. The information processing module searches for the corresponding fault handling information in the storage module based on the fault code, providing repair personnel with accurate repair guidance.

4. The vehicle owner's manual embedded diagnostic system according to claim 1, characterized in that, The information processing module includes a data filtering unit, a data parsing unit, and a data matching unit; The data filtering unit is used to perform preliminary filtering of the user manual content in the storage module based on the information collected by the information collection module, and to filter out some information related to the current vehicle status. Its filtering algorithm is based on keyword matching of information and numerical range judgment of vehicle status. The data parsing unit parses the filtered user manual information, transforming the text information into structured information that is easier for the display module to show, such as converting long paragraphs of text description into lists or tables. The data matching unit accurately matches the parsed information with the user's operational needs and the vehicle's real-time status. The matching degree is calculated using a similarity calculation algorithm. Let the user's need information vector be... The filtered information vector is The similarity is: In the formula, This indicates the similarity score. When the similarity score reaches a set threshold, it indicates a successful match, and the successful match information is sent to the display module.

5. The vehicle owner's manual embedded diagnostic system according to claim 1, characterized in that, The display module is a touch screen with split-screen display functionality; When displaying user manual information, the information can be divided into a main display area and a secondary display area according to the importance of the information and the user's operating habits; The display module also has a voice playback function. For users with poor eyesight or in low-light environments, users can turn on the voice playback function, which will convert the displayed user manual information into a voice signal output through voice synthesis technology. During the voice synthesis process, the tone, speed and volume of the voice are adjusted according to different information types. Meanwhile, the display module supports user zooming, rotation, and marking operations on the displayed content, making it convenient for users to view and use information. Users can zoom the displayed content through touch operations, with zoom ratios as follows: In the formula, Indicates the scaling ratio. Indicates the distance the user touches and swipes. This indicates the scaling factor.

6. The vehicle owner's manual embedded diagnostic system according to claim 1, characterized in that, The communication module supports multiple communication protocols, including but not limited to Bluetooth, Wi-Fi, and wired Ethernet protocols; When using the Bluetooth protocol, the communication module connects to the user's mobile device, allowing the user to remotely operate the system via an application on their mobile device. Remote operations include, but are not limited to, updating the user manual and viewing vehicle information. The Bluetooth transmission rate is calculated using the following formula: In the formula, Indicates Bluetooth transmission rate. Indicates Bluetooth bandwidth. Indicates the signal-to-noise ratio of the Bluetooth signal; When using the Wi-Fi protocol, the communication module connects to the wireless network, enabling the system to connect to the car manufacturer's server. The car manufacturer pushes the latest user manual information and diagnostic program updates to the system. The Wi-Fi transmission rate is calculated using the following formula: In the formula, Indicates Wi-Fi transmission rate. Indicates Wi-Fi bandwidth. Indicates the signal-to-noise ratio of a Wi-Fi signal; When using the wired Ethernet protocol, the system can connect to the network system of the repair shop, making it convenient for repair personnel to share vehicle information to the shop's information management system, thereby achieving centralized management and maintenance of vehicle information.

7. The vehicle owner's manual embedded diagnostic system according to claim 1, characterized in that, User permissions are divided into ordinary user permissions and professional maintenance personnel permissions; Regular users can only view and operate the owner's manual content related to the daily use of the car, including vehicle operation instructions and routine maintenance information. When a regular user performs an operation beyond their authorized scope, such as attempting to modify the system's diagnostic program or view advanced repair information, the system will prompt that the user does not have sufficient permissions. Professional repair personnel have access to view all information within the operating system, including complex fault diagnosis and repair information. The user access management module determines permissions based on the user's login information, which can be obtained through password input, fingerprint recognition, or iris recognition. Different recognition methods correspond to different security levels. Let's assume the security level for password input is [insert security level here]. The security level of fingerprint recognition is The security level of iris recognition is ,and Users can choose different login methods according to their own needs, and the system grants corresponding permissions based on the user's security level.

8. The vehicle owner's manual embedded diagnostic system according to claim 1, characterized in that, The system periodically performs status checks on its various modules. For storage modules, monitor their storage capacity usage; when the storage capacity utilization exceeds a threshold... When this happens, the system will prompt you to expand storage. The storage capacity utilization rate will be calculated as follows: In the formula, Indicates storage capacity utilization. Indicates the used storage capacity. Total storage capacity; For the information acquisition module, the working status of the sensor is checked. The sensor is judged to be working properly by sending test signals to the sensor and receiving feedback signals. For the temperature sensor, analog signals of different temperatures are sent and the sensor's feedback signals are used to determine whether it accurately measures the temperature. For the information processing module, its processing performance is tested based on the time delay of information processing. To evaluate processing performance, when At that time, among them If the system detects a malfunction in the information processing module, it will indicate that the processing module may be faulty. For the display module, check its display effect, including: checking whether the screen resolution, brightness and color display are normal; For the communication module, its connectivity performance is tested by sending and receiving test data packets and analyzing the packet loss rate. To determine the connection quality of the communication module, when At that time, among them The system will indicate a problem with the communication module if the maximum allowable packet loss rate is reached.

9. A vehicle owner's manual embedded diagnostic system according to claim 1, characterized in that, During system use, users provide feedback to car manufacturers or system developers through the communication module. This feedback includes user suggestions on the user manual, difficulties encountered in system operation, and system malfunction information. The communication module stores user feedback information in a specific area of ​​the storage module and sends it to the car manufacturer or system developer. At the same time, the user feedback module categorizes user feedback information into user manual content, system operation, and system fault categories. For different types of feedback information, the system will provide users with different feedback templates, and users will fill in the feedback content according to the templates. Car manufacturers or system developers update and improve user manuals and optimize and improve systems based on user feedback. The system prioritizes user feedback based on frequency and importance, assuming the importance of user feedback is 1. The feedback frequency is The priority is: In the formula, Indicates priority. This indicates the priority coefficient.

10. A vehicle owner's manual embedded diagnostic system according to claim 1, characterized in that, The user manual information and vehicle information in the storage module are encrypted to prevent information leakage; A combination of symmetric and asymmetric encryption algorithms is used. For core technical information in vehicle diagnostics and user manuals, asymmetric encryption is employed. The public key is The private key is The information encryption formula is: In the formula, This indicates the encrypted information. Represents the original information; For ordinary user manual information and vehicle status information, a symmetric encryption algorithm is used: Use key The information is encrypted using the following encryption function: The data encryption module automatically encrypts information during storage and transmission. When the information processing module reads the information, it decrypts the encrypted information to ensure the security and confidentiality of the information and prevent unauthorized users from obtaining important information by tampering with the system or intercepting communication data.

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