Vehicle diagnosis system based on optical fiber communication

Abstract

The invention provides a vehicle diagnosis system based on optical fiber communication, which comprises a vehicle, an energy supply pile and a cloud end, and is characterized in that the energy supply pile performs energy supply and diagnosis inspection on the vehicle at the same time; and the cloud end processes and analyzes the diagnosis and examination result and sends the processed and analyzed diagnosis and examination result to the terminal. When the vehicle is charged or refueled, the fault of the vehicle is checked, optical fibers are adopted to transmit detection signals and feedback signals, and the vehicle condition is diagnosed, checked, analyzed and pre-judged at high frequency, so that a vehicle owner can know the vehicle condition in time and pre-judge possible faults of the vehicle, and the driving safety of the vehicle is improved.

Description

Technical Field

[0001] This application belongs to the field of information transmission, and in particular relates to a vehicle diagnostic system based on optical fiber communication. Background Technology

[0002] With the rapid popularization of automobiles, more and more families own vehicles, leading to a surge in demand for vehicle maintenance and troubleshooting. Currently, vehicle maintenance and troubleshooting typically require visits to specialized locations, which is inconvenient and infrequent. Often, vehicles are only inspected after a malfunction occurs. By the time a vehicle is taken to a 4S dealership or auto repair shop, the problem has likely already occurred some time ago, making it impossible to analyze the vehicle's condition in advance or predict potential malfunctions, posing significant safety hazards. Therefore, how to conduct frequent diagnostic inspections and predict vehicle conditions so that car owners can promptly understand their vehicle's status and anticipate potential malfunctions, thereby improving driving safety, has become a pressing technical challenge. Summary of the Invention

[0003] This invention provides a vehicle diagnostic system based on optical fiber communication, which solves the technical problems of cumbersome and infrequent vehicle maintenance and fault diagnosis in the prior art, the inability of vehicle owners to understand the vehicle status in a timely manner, and the potential safety hazards in driving the vehicle.

[0004] This invention provides a vehicle diagnostic system based on optical fiber communication, characterized in that it includes: a vehicle, an energy supply pile, and a cloud platform; the energy supply pile is used to simultaneously supply energy and perform diagnostic checks on the vehicle; the cloud platform is used to process and analyze the diagnostic check results and send the processed and analyzed diagnostic check results to a terminal.

[0005] Optionally, the cloud connects multiple energy supply piles via a fiber optic backbone network, and the energy supply piles connect to multiple vehicles via fiber optic communication interfaces.

[0006] Optionally, the energy supply pile is connected to the vehicle's fiber optic Ethernet via a fiber optic communication interface. The energy supply pile initiates a UDS diagnostic request, and the corresponding ECU of the vehicle responds to the UDS diagnostic request.

[0007] Optionally, the cloud can predict vehicle malfunctions based on diagnostic inspection results and send the predicted vehicle malfunction information to the terminal.

[0008] Optionally, energy supply stations include charging stations and refueling stations.

[0009] Optionally, the optical fiber includes single-mode fiber and multimode fiber, with multimode fiber supporting multi-channel transmission.

[0010] Optionally, the optical fiber includes a fiber core, an inner cladding that surrounds the fiber core, and an outer cladding that surrounds the inner cladding, through which data and energy are transmitted respectively.

[0011] Optionally, the cloud can remotely update the vehicle via OTA.

[0012] Optionally, the cloud is used to determine vehicle faults based on diagnostic inspection results; remotely and automatically eliminate vehicle faults; and send information about vehicle faults that cannot be automatically eliminated to the terminal.

[0013] Optionally, the cloud can determine a vehicle repair guide based on the diagnostic inspection results and send the vehicle repair guide to the terminal.

[0014] Optionally, the terminal includes in-vehicle infotainment systems and mobile phones.

[0015] As can be seen from the above technical solution, this invention provides a vehicle diagnostic system based on optical fiber communication, which solves the technical problems of cumbersome and infrequent vehicle maintenance and fault diagnosis in existing technologies, preventing vehicle owners from timely understanding of vehicle status and posing safety hazards to driving. The vehicle diagnostic system includes a vehicle, a charging station, and a cloud platform. The charging station simultaneously provides energy supply and performs diagnostic checks on the vehicle; the cloud platform processes and analyzes the diagnostic check results and sends them to the terminal. Fault checks are performed on the vehicle while it is charging or refueling, and optical fiber is used to transmit detection and feedback signals. High-frequency diagnostic checks and analysis predict vehicle conditions, allowing vehicle owners to promptly understand the vehicle's status and anticipate potential faults, thus improving driving safety. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a vehicle diagnostic system based on optical fiber communication according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of a network connection for a vehicle diagnostic system according to an embodiment of the present invention.

[0018] Figure 3 This is a cross-sectional schematic diagram of a high-performance optical fiber for simultaneous transmission provided in an embodiment of the present invention. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Figure 1 The diagram shows a structural schematic of a vehicle diagnostic system based on optical fiber communication according to an embodiment of the present invention. Figure 1 As shown, the vehicle diagnostic system based on fiber optic communication in this embodiment includes: a vehicle 11, an energy supply pile 12, and a cloud 13. The vehicle 11 is the target of the diagnostic inspection. When it needs to be charged or refueled, it goes to the energy supply pile 12 and participates in the vehicle diagnostic system as the target of the diagnostic inspection. The energy supply pile 12 simultaneously provides energy to the vehicle 11 and performs diagnostic inspection. The cloud 13 processes and analyzes the diagnostic inspection results and remotely sends the processed and analyzed diagnostic inspection results to the terminal.

[0021] In a specific embodiment, the vehicle diagnostic system based on fiber optic communication adopts a tree structure. The cloud platform 13 is connected to multiple energy supply piles 12 via a fiber optic backbone network. The energy supply piles 12 are connected to multiple vehicles 11 via fiber optic communication interfaces. Diagnostic checks are performed when the vehicles are charging or refueling. After preliminary data processing, the energy supply piles 12 send the data to the cloud platform 13 via the fiber optic network. The cloud platform 13 performs comprehensive processing and analysis of the diagnostic results and remotely sends the processed diagnostic results and vehicle fault prediction information to the terminal so that the vehicle owner can keep track of vehicle information in a timely manner. The energy supply piles 12 include charging piles and refueling piles. When a vehicle is connected to a charging gun or refueling gun during charging or refueling, the charging pile or refueling pile performs diagnostic checks on the vehicle, saving time and increasing the frequency of vehicle diagnostics.

[0022] Figure 2 A schematic diagram of a vehicle diagnostic system network connection according to an embodiment of the present invention is shown, as follows: Figure 2 As shown, charging piles or refueling piles are connected to the vehicle's internal fiber optic Ethernet network via fiber optic communication interfaces. Fiber optic Ethernet communication is used to implement Unified Diagnostic Services (UDS) diagnostic checks. UDS is an application layer protocol defined by the ISO 14229 standard, specifically designed for the diagnostic service needs of the data link layer of land vehicles. Through a client-server architecture, it provides a unified framework and service for diagnostic communication between automotive electronic control units (ECUs), enabling vehicles of different brands and ECUs from different manufacturers to use the same diagnostic tools, greatly improving the convenience and efficiency of diagnostics. UDS diagnostic checks between energy supply piles and vehicles ensure interoperability of equipment from different vehicle manufacturers, achieving compatibility for diagnostics across different vehicles.

[0023] Specifically, this involves the following steps: While the vehicle is charging or refueling, the charging or refueling station initiates a UDS diagnostic request to the vehicle's internal ECU via a fiber optic communication interface. The corresponding ECU on the vehicle responds to the UDS diagnostic request, and the vehicle returns diagnostic results via the fiber optic communication interface. The charging or refueling station receives the diagnostic results, performs preliminary processing, and then connects to the fiber optic backbone network via the fiber optic backbone interface to send the diagnostic results to the cloud. The cloud processes and analyzes the diagnostic results and remotely sends the processed diagnostic results to the terminal. The terminal includes an in-vehicle infotainment system and a mobile phone. The cloud wirelessly transmits the vehicle diagnostic results to the in-vehicle infotainment system or mobile phone, allowing the vehicle owner to monitor the vehicle's status in real time by checking the in-vehicle infotainment system, mobile phone information, or an app.

[0024] Charging or refueling stations perform diagnostic checks on vehicles while they are refueling or charging. This allows for frequent and convenient diagnostic checks, eliminating the need for car owners to spend significant time and effort visiting professional repair shops. Frequent checks enable timely detection of vehicle problems and malfunctions. However, refueling or charging times are short. To maximize the real-time nature of vehicle diagnostic checks and save car owners time, fiber optic cables are used as the transmission medium between the vehicle, the energy supply station, and the cloud. Fiber optic communication boasts extremely high data transmission rates, supporting real-time transmission of large amounts of data in this embodiment, ensuring rapid transmission of vehicle diagnostic data during refueling or charging. The very low latency of fiber optic communication ensures that the data upload speed of the diagnostic system is unaffected by transmission delays, reducing latency and making diagnostic checks faster. Compared to traditional copper wires, fiber optic cables have stronger resistance to electromagnetic interference, ensuring that the data upload speed of the diagnostic system is unaffected by transmission delays, reducing latency and making diagnostic checks faster.

[0025] In a specific embodiment, after processing and analyzing the diagnostic inspection results in the cloud, vehicle malfunctions are predicted based on these results, and the predicted malfunction information is sent to the terminal. For example, if the diagnostic inspection results indicate an engine abnormality, the abnormality information is sent to the terminal, reminding the owner to promptly visit an offline repair shop for inspection. Simultaneously, vehicle fuel consumption and mileage information are read, and vehicle maintenance details are sent to the terminal, notifying the owner of necessary maintenance based on the vehicle's specific condition. The vehicle diagnostic system provided in this embodiment not only alerts to existing vehicle malfunctions but also predicts vehicle abnormalities and malfunctions, helping drivers understand the vehicle's condition, prevent potential abnormalities and malfunctions, and further improve driving safety.

[0026] Optical fibers include single-mode fiber and multimode fiber. Single-mode fiber has a single transmission mode, and the optical signal can maintain a high degree of consistency when transmitted in the fiber, thus ensuring signal quality during long-distance transmission. Multimode fiber, on the other hand, allows multiple modes of light to be transmitted in parallel within the same fiber, playing an important role in short-distance communication. Based on the vehicle's need for short-distance, multi-channel transmission, this embodiment uses multimode fiber as the transmission medium. Multimode fiber supports multi-channel transmission and can transmit multiple diagnostic signals simultaneously, improving information transmission efficiency.

[0027] The cloud uses Over-the-Air (OTA) technology to remotely update vehicles. OTA refers to a technology that remotely manages the firmware, data, and applications on vehicle components via mobile communication networks. The vehicle's firmware is uploaded to the cloud, and the cloud receives diagnostic results to determine if the firmware and software need updating. If an update is needed, the update software is uploaded to the OTA cloud, which wirelessly transmits the update software to the vehicle, where it is automatically and remotely updated. OTA includes Firmware Over-the-Air (FOTA) and Software Over-the-Air (SOTA). FOTA upgrades network-connected devices, including the engine, motor, transmission, and chassis control systems, by writing new firmware without altering the vehicle's original components. SOTA upgrades applications based on the operating system, referring to applications closer to the user, including in-vehicle navigation, entertainment applications, voice assistants, and UI interfaces. The cloud platform determines whether FOTA and SOTA updates are needed based on vehicle diagnostic test results. If updates are required, the vehicle software is remotely updated via OTA, reducing manpower and material resources while improving user experience and satisfaction.

[0028] In a specific embodiment, such as Figure 3 As shown, an optical fiber includes at least a fiber core, an inner cladding surrounding the fiber core, and an outer cladding surrounding the inner cladding. Data light and energy light are transmitted through the fiber core and inner cladding, respectively. The refractive index of the inner cladding is lower than that of the fiber core, and the refractive index of the outer cladding is lower than that of the inner cladding. Existing charging piles charge vehicles via cables, with copper wires wrapped within the cables transmitting electrical energy. If vehicle-to-cloud diagnostic information exchange is required, additional communication lines are needed, requiring the addition of communication cables or optical fibers to the existing power supply cables. This undoubtedly increases the cost and complexity of the system. Therefore, this embodiment proposes a scheme using a single power supply and communication optical fiber to simultaneously transmit data and electrical energy, utilizing different core cladding layers of the optical fiber to transmit energy and data light respectively. This allows a single optical fiber to transmit high-volume data while simultaneously providing power, reducing wiring costs.

[0029] In a specific embodiment, vehicle diagnostic tools and the process of troubleshooting and resolving problems are placed online in the cloud. The cloud determines vehicle faults based on the diagnostic and inspection results, such as those related to the engine, brake airbags, transmission, and electronic steering, and displays the corresponding fault content and possible causes. After determining the vehicle fault, remote automatic fault elimination is implemented. Vehicle faults that cannot be eliminated automatically are sent to the terminal, either via SMS or an update on the APP to the vehicle owner, or the fault is displayed on the vehicle's infotainment system, so that the vehicle owner is aware of the fault information. At the same time, the fault information is saved in the database to improve the vehicle fault database for future fault investigation. Remote vehicle diagnostics can achieve efficient diagnosis and rapid response to vehicle faults, reduce maintenance costs, and improve user experience.

[0030] The cloud-based system generates a vehicle repair guide based on diagnostic and inspection results. This guide is determined by factors such as vehicle maintenance and repair information, mileage, fault information, and potential safety hazards. The repair guide includes repair suggestions, repair time, repair location, and vehicle information. The cloud-based system generates the vehicle repair guide and sends it to the owner's mobile phone or in-vehicle system, enabling the owner to promptly visit a physical store for vehicle repairs and further reduce potential vehicle safety hazards.

[0031] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0032] Those skilled in the art will understand that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope defined by the claims of the present invention.

Claims

1. A vehicle diagnostic system based on optical fiber communication, characterized in that, include: Vehicles, power supply stations, and the cloud, The energy supply pile is used to simultaneously supply energy to the vehicle and perform diagnostic checks. The cloud platform is used to process and analyze diagnostic test results, and then send the processed and analyzed diagnostic test results to the terminal.

2. The vehicle diagnostic system according to claim 1, characterized in that, Also includes: The cloud platform connects to multiple energy supply piles via a fiber optic backbone network, and the energy supply piles connect to multiple vehicles via fiber optic communication interfaces.

3. The vehicle diagnostic system according to claim 2, characterized in that, Also includes: The energy supply pile is connected to the vehicle's fiber optic Ethernet via a fiber optic communication interface. The energy supply pile initiates a UDS diagnostic request, and the corresponding ECU of the vehicle responds to the UDS diagnostic request.

4. The vehicle diagnostic system according to claim 1, characterized in that, Also includes: The cloud platform uses diagnostic inspection results to predict vehicle malfunctions and sends the predicted vehicle malfunction information to the terminal.

5. The vehicle diagnostic system according to claim 1, characterized in that, The energy supply piles include charging piles and refueling piles.

6. The vehicle diagnostic system according to claim 2, characterized in that, The optical fiber includes single-mode optical fiber and multimode optical fiber, and the multimode optical fiber supports multi-channel transmission.

7. The vehicle diagnostic system according to claim 2, characterized in that, The optical fiber includes a fiber core, an inner cladding that wraps the fiber core, and an outer cladding that wraps the inner cladding. Data light and energy light are transmitted through the fiber core and the inner cladding, respectively.

8. The vehicle diagnostic system according to claim 4, characterized in that, Also includes: The cloud platform remotely updates the vehicle via OTA (Over-The-Air).

9. The vehicle diagnostic system according to claim 1, characterized in that, Also includes: The cloud platform is used to determine vehicle malfunctions based on the diagnostic test results; The vehicle malfunction can be eliminated remotely and automatically. Vehicle fault information that cannot be automatically eliminated is sent to the terminal.

10. The vehicle diagnostic system according to claim 9, characterized in that, Also includes: The cloud platform determines a vehicle repair guide based on the diagnostic test results and sends the vehicle repair guide to the terminal.

11. The vehicle diagnostic system according to claim 1, characterized in that, The terminals include in-vehicle systems and mobile phones.

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