Optical fiber terminal processing method, optical fiber structure and vehicle-mounted domain control system

Abstract

The invention provides an optical fiber terminal processing method, an optical fiber structure and a vehicle-mounted domain control system.The method comprises the steps that when it is detected that a cable side optical fiber terminal enters a terminal matching cavity where a controller side optical fiber terminal is located, power is supplied to the cable side optical fiber terminal, and the controller side optical fiber terminal and the cable side optical fiber terminal are controlled to be matched with each other; therefore, the terminal matching cavity is in a closed state. Carrying out vacuumizing operation on the terminal interworking cavity so as to enable the terminal interworking cavity to be in a clean state and a negative pressure state; the optical fiber terminal surface of the cable-side optical fiber terminal and the optical fiber terminal surface of the controller-side optical fiber terminal are joined on the basis of the pressure difference between the cavity pressure and the atmospheric pressure. According to the invention, a low-voltage even vacuum cavity is formed at the moment that the optical fiber terminal at the cable side is inserted, so that the optical fiber terminal can be connected in a clean state; and meanwhile, the pressure difference is used for assisting the mutual matching and stable insertion between the cable side optical fiber terminal and the controller optical fiber terminal, so that the convenience of wiring harness laying and maintenance links of the whole vehicle is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle-mounted optical networks, and specifically to a method for processing optical fiber terminals, an optical fiber structure, and a vehicle-mounted domain control system. Background Art

[0002] With the development of intelligent new energy vehicles, the vehicle electronic and electrical architecture (EEA) has gradually developed from distributed to centralized. Due to the characteristics of centralized computing and control of the centralized domain controller, it is generally necessary to match the regional controller for regional auxiliary centralized control of the vehicle body. In the existing vehicle architecture, communication is generally based on the controller area network bus (CAN bus), and high-speed and high-bandwidth signals are generally transmitted through Ethernet. At the same time, data transmission between the central domain control and the regional domain control is generally required through a combination of Ethernet and CAN bus. However, although the centralized domain control architecture reduces the length of the data link between the computing units, the electrical signals between it and the regional controller often need to be transmitted through longer cables. However, when electrical signals are transmitted over long distances, problems such as signal interference and signal attenuation are often prone to occur.

[0003] In the prior art, there are solutions to replace traditional electrical signal transmission with optical fiber transmission to improve the anti-interference ability of long-distance data transmission. However, the connection and mutual mating between existing optical fiber terminals are not carried out in a dust-free environment. If dust appears on the surface of the optical fiber terminal, it will affect the quality of optical fiber signal transmission. The prior art uses dust covers, dust plugs, dust-proof mechanical structural parts, etc. to prevent dust, but on the one hand, it increases the difficulty of assembly, and on the other hand, it increases the complexity of structural part design and mutual mating, which is not conducive to large-scale layout of vehicle wiring harnesses. Moreover, the method of physical shielding to prevent dust cannot effectively prevent dust during vehicle maintenance, and cannot provide good dust-proof function when replacing optical fibers in the vehicle wiring harness. Summary of the invention

[0004] In order to solve the above technical problems, the present application proposes a method for processing optical fiber terminals, an optical fiber structure and a vehicle-mounted domain control system.

[0005] On the one hand, an embodiment of the present application provides a method for processing an optical fiber terminal, the method comprising:

[0006] When it is detected that the optical fiber terminal on the cable side enters the terminal inter-matching cavity where the optical fiber terminal on the controller side is located, power is supplied to the optical fiber terminal on the cable side, and the optical fiber terminal on the controller side is controlled to cooperate with the optical fiber terminal on the cable side, so that the terminal inter-matching cavity is in a sealed state;

[0007] The terminal mating cavity is vacuumed to make the terminal mating cavity clean and in a negative pressure state;

[0008] determining a cavity pressure within the terminal mating cavity and determining a pressure difference between the cavity pressure and atmospheric pressure;

[0009] Based on the pressure difference, the fiber terminal surface of the fiber optic terminal on the cable side is controlled to be close to the fiber terminal surface of the fiber optic terminal on the controller side, so that the fiber terminal surface of the fiber optic terminal on the cable side and the fiber terminal surface of the fiber optic terminal on the controller side are connected.

[0010] Furthermore, the above method also includes:

[0011] Determine a preset torque threshold of a limit device; the limit device is located on a side of the optical fiber terminal surface away from the controller-side optical fiber terminal in the terminal mating cavity;

[0012] Based on the atmospheric pressure and the cavity pressure, determine the external force torque applied to the optical fiber terminal on the cable side;

[0013] Based on a preset torque threshold, determining an initial distance between a fiber terminal surface of the fiber terminal on the cable side and a fiber terminal surface of the fiber terminal on the controller side when the fiber terminal on the controller side and the fiber terminal on the cable side cooperate with each other;

[0014] Determine the working state of the limit device according to the difference between the external force torque and the preset torque threshold;

[0015] Based on the working status of the limiting device, the distance between the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side is controlled to be equal to the initial distance so that when the external force torque is less than the preset torque threshold, the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side cannot be connected.

[0016] Furthermore, the above-mentioned determining the working state of the limit device according to the difference between the external force torque and the preset torque threshold value includes:

[0017] When the external force torque is less than the preset torque threshold, the working state of the limit device is determined to be the limit state;

[0018] The distance between the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side based on the working state of the limit device includes:

[0019] When the limiting device is in the limiting state, the distance between the optical fiber terminal surface of the optical fiber terminal on the control cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side is greater than or equal to the initial distance.

[0020] Furthermore, the above-mentioned determining the working state of the limit device according to the difference between the external force torque and the preset torque threshold value includes:

[0021] When the external force torque is greater than or equal to the preset torque threshold, the working state of the limit device is determined to be a non-limiting state;

[0022] The distance between the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side based on the working state of the limit device includes:

[0023] When the limit device is in a non-limiting state, the distance between the fiber optic terminal surface of the fiber optic terminal on the control cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side is smaller than the initial distance, so that the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side are connected.

[0024] Furthermore, the above method also includes:

[0025] When the terminal mating cavity is in a sealed state, the resistance value between the optical fiber terminal on the cable side and the optical fiber terminal on the controller side is set to an initial resistance value;

[0026] Determine the real-time resistance value between the optical fiber terminal on the cable side and the optical fiber terminal on the controller side;

[0027] Based on the relationship between the real-time resistance value and the initial resistance value, it is determined whether the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side are connected.

[0028] Furthermore, when the terminal mating cavity is in a closed state, after setting the resistance value between the optical fiber terminal on the cable side and the optical fiber terminal on the controller side to an initial resistance value, the method further includes:

[0029] When the limit device fails, the resistance value between the optical fiber terminal on the cable side and the optical fiber terminal on the controller side is determined to be a first resistance value;

[0030] When the distance that the cable-side optical fiber terminal enters into the terminal mating cavity is less than the initial distance, the resistance value between the cable-side optical fiber terminal and the controller-side optical fiber terminal is determined as the second resistance value.

[0031] Furthermore, the above-mentioned determining whether the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side are connected based on the relationship between the real-time resistance value and the initial resistance value includes:

[0032] Based on the relationship between the real-time resistance value and the initial resistance value, based on the relationship between the real-time resistance value and the first resistance value, and based on the relationship between the real-time resistance value and the second resistance value, determine whether the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side are connected.

[0033] Further, based on the relationship between the real-time resistance value and the initial resistance value, based on the relationship between the real-time resistance value and the first resistance value, and based on the relationship between the real-time resistance value and the second resistance value, determining whether the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side are connected includes:

[0034] When the real-time resistance value is greater than or equal to the initial resistance value, and the real-time resistance value is greater than the first resistance value, and the real-time resistance value is greater than the second resistance value, it is determined that the fiber terminal surface of the fiber optic terminal on the cable side and the fiber terminal surface of the fiber optic terminal on the controller side are connected.

[0035] On the other hand, the embodiment of the present application further provides an optical fiber structure, the optical fiber structure includes a controller-side optical fiber terminal and a cable-side optical fiber terminal, the controller-side optical fiber terminal includes a controller-side structural component, the controller-side structural component includes a power supply device, a vacuum device and a terminal mutual mating cavity; the optical fiber terminal surface of the cable-side optical fiber terminal and the optical fiber terminal surface of the controller-side optical fiber are arranged in the terminal mutual mating cavity;

[0036] The power supply device is used to supply power to the optical fiber terminal on the cable side when the optical fiber terminal on the controller side detects that the optical fiber terminal on the cable side enters the terminal mating cavity; the vacuum device is used to vacuum the terminal mating cavity to make the terminal mating cavity clean and in a negative pressure state;

[0037] The optical fiber structure is processed according to the above method so that the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side are connected.

[0038] Furthermore, a limiting device is provided in the terminal mating cavity, and the limiting device is located on a side of the optical fiber terminal surface away from the controller-side optical fiber terminal in the terminal mating cavity;

[0039] The limiting device is used to control the distance between the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side according to the difference between the external force torque and the preset torque threshold, so that when the external force torque is less than the preset torque threshold, the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side cannot be connected; the external force torque is the torque applied to the fiber optic terminal on the cable side determined based on the atmospheric pressure and the cavity pressure.

[0040] On the other hand, an embodiment of the present application further provides a vehicle-mounted domain control system, characterized in that the vehicle-mounted domain control system includes a central centralized domain control and a first preset number of regional controllers, the central centralized domain control includes a chassis domain control; the first preset number of regional controllers are respectively arranged on the vehicle; the chassis domain control is arranged at a position close to the central centralized domain control; the distance between the chassis domain control and the central centralized domain control is less than the distance between the first preset number of regional controllers and the central centralized domain control;

[0041] The chassis domain control transmits data with the central domain control via Ethernet and serial communication bus protocols; the regional controller and the central domain control transmit data via optical fiber, which includes the above-mentioned optical fiber structure.

[0042] Further, the vehicle-mounted domain control system further includes a second preset number of vehicle control units;

[0043] The vehicle control unit transmits data with the regional controller via Ethernet and serial communication bus protocols.

[0044] Further, the central centralized domain control includes a third preset number of independent domain controllers, and the third preset number of independent domain controllers are decoupled from each other;

[0045] The third preset number of independent domain controllers includes a standby domain controller and a primary domain controller. The standby domain controller performs partial or full functional mirror redundancy for the primary domain controller in a primary-standby mirror backup manner.

[0046] An embodiment of the present application provides a method for processing optical fiber terminals, an optical fiber structure, and an in-vehicle domain control system, the method comprising: when it is detected that the optical fiber terminal on the cable side enters the terminal mating cavity where the optical fiber terminal on the controller side is located, powering the optical fiber terminal on the cable side, and controlling the optical fiber terminal on the controller side to cooperate with the optical fiber terminal on the cable side so that the terminal mating cavity is in a closed state; vacuuming the terminal mating cavity so that the terminal mating cavity is in a clean state and a negative pressure state; determining the cavity pressure in the terminal mating cavity, and determining the pressure difference between the cavity pressure and the atmospheric pressure; and controlling the optical fiber terminal surface of the optical fiber terminal on the cable side to be close to the optical fiber terminal surface of the optical fiber terminal on the controller side based on the pressure difference, so that the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side are connected. The above method is used to connect and mate the optical fiber terminals. A low-pressure or even vacuum cavity is formed at the moment when the optical fiber terminal on the cable side is inserted, so that the optical fiber terminals can be connected and mate in a dust-free environment. It can effectively solve the dust pollution on the surface of the optical fiber terminal that may be introduced during assembly and maintenance in the vehicle environment, and reduce the risk of communication abnormality caused by the attenuation of the optical port signal quality when connecting and mating the optical fiber cable and the optical port of the domain controller. At the same time, the pressure difference between the inside and outside of the cavity is used to assist the mating between the optical fiber terminal on the cable side and the optical fiber terminal on the controller, thereby improving the convenience of the wiring harness layout and maintenance of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions and advantages in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0048] Figure 1 It is a flowchart of a method for processing an optical fiber terminal provided in an embodiment of the present application.

[0049] Figure 2 It is a flow chart of a control method of a limiting device of an optical fiber terminal provided in an embodiment of the present application.

[0050] Figure 3 It is a schematic diagram of the relationship between a preset torque threshold and a pressure difference provided in an embodiment of the present application.

[0051] Figure 4 It is a schematic diagram of a flow chart for determining the connection relationship of optical fiber terminals based on resistance values ​​provided in an embodiment of the present application.

[0052] Figure 5 It is a schematic diagram of an equivalent circuit of a deviation monitoring ring mutual matching of a limit device provided in an embodiment of the present application.

[0053] Figure 6 It is a structural schematic diagram of an optical fiber structure provided in an embodiment of the present application.

[0054] Figure 7 It is a structural schematic diagram of an optical fiber structure with a limiting device provided in an embodiment of the present application.

[0055] Figure 8 It is a schematic diagram of a vehicle-mounted domain control system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0057] It should be noted that the terms "first", "second", etc. in the specification and claims of the embodiment of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the embodiment of the present application described here can be implemented in an order other than those illustrated or described here. Thus, the features defined as "first" and "second" can expressly or implicitly include one or more of the features. In the description of the present embodiment, unless otherwise specified, the meaning of "multiple" is two or more. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or server comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0058] With the development of intelligent new energy vehicles, the vehicle electrical and electronic architecture (EEA) is gradually developing from distributed to centralized. In the next generation of vehicle architecture, it will gradually develop from multi-domain controllers to centralized domain controllers.

[0059] Among them, due to the characteristics of centralized computing and control of the central centralized domain controller, it is generally necessary to be used in conjunction with a regional controller for regional auxiliary centralized control of the vehicle body.

[0060] In the existing vehicle architecture, communication is generally based on the controller area network bus (CAN bus), and high-speed, high-bandwidth signals are generally transmitted through Ethernet. At the same time, data transmission between the central domain controller and the regional domain controller is generally required to be carried out through a combination of Ethernet and CAN bus.

[0061] However, although the centralized domain control architecture reduces the length of data links between computing units, the electrical signals between them and the regional controllers often need to be transmitted through long cables. When electrical signals are transmitted over long distances, they are prone to signal interference and signal attenuation.

[0062] In particular, Ethernet will gradually develop from 100M Ethernet to Gigabit, 2.5G, 5G, and even 10G bandwidth or above in the future. The long-distance transmission of large bandwidth and high-speed data is more likely to cause data packet loss due to signal interference and signal attenuation, which is not conducive to the stability of data communication under the next-generation vehicle EE architecture.

[0063] In order to solve the above problems, there is a solution in the prior art to replace the traditional electrical signal transmission in the whole vehicle layout through optical fiber transmission to improve the anti-interference ability of long-distance data transmission.

[0064] However, the existing fiber optic terminals generally need to be connected and plugged in during the wiring harness layout of the vehicle, which is not done in a dust-free environment. If dust appears on the surface of the fiber optic terminal, it will affect the quality of fiber optic signal transmission to a certain extent. After the wiring harness of the vehicle is laid out, troubleshooting the signal packet loss caused by fiber optic terminal contamination will bring a huge workload to the rearrangement of the wiring harness.

[0065] Another solution is to use physical forms such as dust covers, dust plugs, and dust-proof mechanical structural parts to prevent dust. On the one hand, it increases the difficulty of assembly, and on the other hand, it increases the complexity of structural part design and mutual matching, which is not conducive to large-scale layout of the vehicle wiring harness.

[0066] In addition, the above-mentioned method of preventing dust by physical shielding cannot effectively prevent dust during vehicle maintenance. This is because after a long period of operation of the vehicle, the above-mentioned terminal dust covers, dust plugs, etc., in non-vacuum and non-sealed conditions, will inevitably accumulate dust, particles, etc., and lose their original dust-proof effect. When the optical fiber of the vehicle wiring harness is replaced, it cannot provide good dust-proof function.

[0067] Based on this, the optical fiber terminal includes two main parts, the optical fiber terminal on the cable side and the optical fiber terminal on the controller side. The optical fiber terminal on the controller side is fixedly arranged on a certain main structure, such as a car. This method is used to process the connection process of the optical fiber terminal on the cable side and the optical fiber terminal on the controller side. Figure 1 As shown, the present application proposes a method for processing an optical fiber terminal, the method comprising:

[0068] S10: When it is detected that the fiber optic terminal on the cable side enters the terminal mating cavity where the fiber optic terminal on the controller side is located, power is supplied to the fiber optic terminal on the cable side, and the fiber optic terminal on the controller side is controlled to cooperate with the fiber optic terminal on the cable side to make the terminal mating cavity airtight.

[0069] The controller-side fiber optic terminal is a key component in the optical fiber communication system and is usually installed in the control panel or interface box of the communication equipment. Its function is to receive the optical signal from the cable-side fiber optic terminal and process and convert the signal through the internal electronic circuit to ensure the integrity and stability of the signal. The controller-side terminal also includes a power management function to provide the necessary power for the cable-side terminal, as well as to detect and feedback the connection status to ensure the reliability and efficiency of the entire communication link. The cable-side fiber optic terminal is an interface component connected to the optical fiber cable, which is responsible for transmitting the optical signal in the optical fiber cable to the controller-side fiber optic terminal. The design of the cable-side terminal needs to ensure precise docking with the controller-side terminal to achieve seamless signal transmission. The terminal mating cavity is a precisely designed mechanical structure that provides a space for precise alignment and connection between the controller-side fiber optic terminal and the cable-side fiber optic terminal. This cavity design ensures that the physical contact between the terminals is accurate and reliable, while also protecting the optical fiber connector from the external environment.

[0070] Exemplarily, when it is detected that the fiber optic terminal on the cable side enters the terminal mating cavity where the fiber optic terminal on the controller side is located, power is supplied to the fiber optic terminal on the cable side. The function of power supply includes but is not limited to ensuring that the electronic components in the fiber optic terminal, such as optical transmitters or optical receivers, work immediately to establish a communication link. After power supply, the system can confirm whether the optical fiber connection is successful and whether the connection quality meets the requirements by detecting the presence of a signal. After power supply, the terminal may provide status indications through LED lights or other means to inform the user of the connection status, such as successful connection, signal strength, etc.

[0071] At this time, the controller side optical fiber terminal and the cable side optical fiber terminal cooperate with each other to make the terminal mating cavity in a closed state. The mutual cooperation here refers to a pre-insertion stage, that is, the state when the optical fiber terminal surface of the cable side optical fiber terminal just enters the terminal mating cavity.

[0072] Optionally, the above-mentioned method of supplying power to the optical fiber terminal on the cable side includes but is not limited to the form of metal contacts.

[0073] S30: performing a vacuum operation on the terminal mating cavity to make the terminal mating cavity be in a clean state and a negative pressure state.

[0074] Exemplarily, the interior of the terminal mating cavity is connected to the vacuum exhaust device, and the exhaust port is located in the structural component of the optical fiber terminal on the controller side. When entering the pre-insertion state, the vacuum exhaust device starts the vacuum operation to make the terminal mating cavity a negative pressure. Under the action of the negative pressure, the air in the terminal mating cavity is gradually sucked away, and the dust floating in the air is also sucked away, forming a clean state and a negative pressure state.

[0075] Optionally, in order to further ensure the connection state of the optical fiber terminal and the signal transmission effect after the connection, the cleaning state may be a dust-free state, and the negative pressure state may be a vacuum state.

[0076] S50: Determine the cavity pressure in the terminal mating cavity, and determine the pressure difference between the cavity pressure and the atmospheric pressure.

[0077] Exemplarily, after the terminal mating cavity is in a negative pressure state, the cavity pressure in the terminal mating cavity at this time is determined, so that the pressure difference between the cavity pressure and the atmospheric pressure can be determined.

[0078] S70: Controlling the fiber terminal surface of the fiber terminal on the cable side to be close to the fiber terminal surface of the fiber terminal on the controller side based on the pressure difference, so that the fiber terminal surface of the fiber terminal on the cable side and the fiber terminal surface of the fiber terminal on the controller side are connected.

[0079] Exemplarily, under the combined effect of the external atmospheric pressure and the negative pressure inside the cavity, the fiber optic terminal surface of the fiber optic terminal on the cable side is automatically pushed and inserted into the terminal mating cavity, that is, under the effect of the pressure difference, the fiber optic terminal surface of the fiber optic terminal on the cable side is controlled to be close to the fiber optic terminal surface of the fiber optic terminal on the controller side, and then the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side are connected in a clean or even dust-free state.

[0080] An embodiment of the present application provides a method for processing an optical fiber terminal, the method comprising: when it is detected that the optical fiber terminal on the cable side enters the terminal mating cavity where the optical fiber terminal on the controller side is located, powering the optical fiber terminal on the cable side, and controlling the optical fiber terminal on the controller side to cooperate with the optical fiber terminal on the cable side so that the terminal mating cavity is in a closed state; vacuuming the terminal mating cavity so that the terminal mating cavity is in a clean state and a negative pressure state; determining the cavity pressure in the terminal mating cavity, and determining the pressure difference between the cavity pressure and the atmospheric pressure; and controlling the optical fiber terminal surface of the optical fiber terminal on the cable side to be close to the optical fiber terminal surface of the optical fiber terminal on the controller side based on the pressure difference, so that the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side are connected. The above method is used to connect and mate the optical fiber terminals. A low-pressure or even vacuum cavity is formed at the moment the optical fiber terminal on the cable side is inserted, so that the optical fiber terminals can be connected and mate in a dust-free environment. This can effectively solve the dust pollution on the surface of the optical fiber terminal that may be introduced during assembly and maintenance in a vehicle-mounted environment, and reduce the risk of communication abnormality caused by the attenuation of the optical port signal quality between the optical fiber cable and the optical port of the domain controller. At the same time, the pressure difference between the inside and outside of the cavity is used to assist the mutual mating between the optical fiber terminal on the cable side and the optical fiber terminal on the controller, thereby improving the convenience of the wiring harness layout and maintenance of the entire vehicle.

[0081] As an optional implementation, Figure 2As shown, the above method also includes:

[0082] S101: Determine a preset torque threshold of a limit device; the limit device is located on a side of the optical fiber terminal surface away from the controller-side optical fiber terminal in the terminal mating cavity.

[0083] Exemplarily, a limiting device is provided on a side of the optical fiber terminal surface away from the controller-side optical fiber terminal in the terminal mating cavity, that is, the limiting device is provided on the side of the terminal mating cavity where the cable-side optical fiber terminal is inserted. The limiting device is used to prevent the optical fiber terminal surface of the cable-side optical fiber terminal and the optical fiber terminal surface of the controller-side optical fiber terminal from being connected before the terminal mating cavity reaches a negative pressure state or a dust-free state. The preset torque threshold refers to the ability of the above-mentioned limiting device to maintain the limit of the cable-side optical fiber terminal inside the cavity within a certain torque range, which helps to ensure that there is still a terminal surface space gap between the cable-side optical fiber terminal and the controller-side optical fiber terminal in the cavity space before the breakthrough limit torque critical point N is reached.

[0084] Optionally, the preset torque threshold can be obtained through experiments or simulation calculations.

[0085] S103: Determine the external force torque applied to the optical fiber terminal at the cable side based on the atmospheric pressure and the cavity pressure.

[0086] Exemplarily, the matching of the fiber optic terminal on the cable side and the fiber optic terminal on the controller side is completed under the control of the pressure difference, so the external force torque applied to the fiber optic terminal on the cable side can be calculated based on the atmospheric pressure and the cavity pressure.

[0087] S105: Based on a preset torque threshold, determine an initial distance between a fiber terminal surface of the fiber terminal on the cable side and a fiber terminal surface of the fiber terminal on the controller side when the fiber terminal on the controller side and the fiber terminal on the cable side cooperate with each other.

[0088] Exemplarily, the method for determining the initial distance is: when the fiber optic terminal on the controller side and the fiber optic terminal on the cable side cooperate with each other, when the external force torque does not reach a preset torque threshold, the distance between the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side is the initial distance.

[0089] S107: Determine the working state of the limit device according to the difference between the external force torque and the preset torque threshold.

[0090] Exemplarily, the working state of the limiting device is determined according to the difference between the external force torque and a preset torque threshold, and the working state of the limiting device includes a limiting state and a non-limiting state.

[0091] S109: Based on the working status of the limiting device, the distance between the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side and the initial distance are controlled so that when the external force torque is less than a preset torque threshold, the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side cannot be connected.

[0092] Exemplarily, according to the working state of the limit device, it is determined whether the limit device is in the limit device, so that the position of the fiber optic terminal surface of the fiber optic terminal on the cable side in the terminal mating cavity can be determined. That is, the distance between the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side and the size of the initial distance can be controlled through the working state of the limit device, so that when the external force torque is less than the preset torque threshold, the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side cannot be connected, and the two can be guaranteed to be connected in a clean state.

[0093] The embodiment of the present application determines the preset torque threshold of the limit device and the initial distance between the corresponding fiber optic terminal surface of the cable-side fiber optic terminal and the fiber optic terminal surface of the controller-side fiber optic terminal, so that the connection state of the fiber optic terminal surface of the cable-side fiber optic terminal and the fiber optic terminal surface of the controller-side fiber optic terminal can be controlled according to the size of the external force torque, which can effectively ensure that the connection between the two is carried out in a clean state, and can effectively solve the dust contamination of the fiber optic terminal surface that may be introduced during assembly and maintenance in a vehicle-mounted environment, and reduce the risk of communication abnormality caused by the attenuation of the optical port signal quality when connecting and mating between the optical fiber cable and the optical port of the domain controller; at the same time, the internal and external pressure difference of the cavity is used to assist the mutual mating between the cable-side fiber optic terminal and the controller fiber optic terminal, reduce or eliminate the offset of the center axis between the optical fiber pairs, and improve the convenience of the wiring harness layout and maintenance links of the entire vehicle.

[0094] As an optional implementation, in the above step S107, determining the working state of the limit device according to the difference between the external force torque and the preset torque threshold includes:

[0095] When the external force torque is less than the preset torque threshold, it is determined that the working state of the limit device is the limit state.

[0096] In the above step S109, the distance between the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side is controlled based on the working state of the limit device, including:

[0097] When the limiting device is in the limiting state, the distance between the optical fiber terminal surface of the optical fiber terminal on the control cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side is greater than or equal to the initial distance.

[0098] Exemplarily, when the external force torque is less than a preset torque threshold, the working state of the limit device is determined to be a limit state. At this time, the limit device will control the distance between the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side to be greater than or equal to the initial distance, so that before the terminal mating cavity reaches a clean state, the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side will not be connected.

[0099] As an optional implementation, in the above step S107, determining the working state of the limit device according to the difference between the external force torque and the preset torque threshold includes:

[0100] When the external force torque is greater than or equal to the preset torque threshold, determining that the working state of the limit device is a non-limiting state;

[0101] In the above step S109, the above-mentioned controlling the distance between the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side based on the working state of the limiting device includes:

[0102] When the limiting device is in a non-limiting state, the distance between the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side is controlled to be smaller than the initial distance so that the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side are connected.

[0103] Exemplarily, when the external force torque is greater than a preset torque threshold, the working state of the limit device is determined to be a non-limiting state. At this time, the vacuum operation has been completed, and the terminal mating cavity has reached a clean state. Under the control of the pressure difference, the distance between the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side are connected, so the distance between the two is smaller than the initial distance, ensuring that the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side are connected in a clean state.

[0104] Optionally, the relationship between the preset torque threshold N of the limiting device and the pressure difference is as follows: Figure 3 As shown, as the pressure difference increases, the preset torque threshold of the limit device blocking the fiber optic terminal on the cable side also increases. When the external force torque N'> the preset torque threshold N, the limit device is broken, and the fiber optic terminal on the cable side is mainly controlled by the atmospheric pressure. Due to the effect of atmospheric pressure, it is automatically sucked into the cavity where the fiber optic terminal on the controller side is located, and the cavity remains clean and dust-free.

[0105] The embodiment of the present application controls the connection status of the fiber optic terminal surface of the cable-side fiber optic terminal and the fiber optic terminal surface of the controller-side fiber optic terminal according to the magnitude of the external force torque, which can effectively ensure that the connection between the two is carried out in a clean state, and can effectively solve the dust contamination of the fiber optic terminal surface that may be introduced during assembly and maintenance in a vehicle-mounted environment, and reduce the risk of communication abnormality caused by the attenuation of the optical port signal quality when connecting and mating between the optical fiber cable and the optical port of the domain controller; at the same time, the internal and external pressure difference of the cavity is used to assist the mutual mating between the cable-side fiber optic terminal and the controller fiber optic terminal to stabilize the insertion, reduce or eliminate the offset of the central axis between the optical fiber pairs, and improve the convenience of the wiring harness layout and maintenance links of the entire vehicle.

[0106] As an optional implementation, Figure 4 and Figure 5 As shown, the above method also includes:

[0107] S201: When the terminal mating cavity is in a sealed state, the resistance value between the optical fiber terminal on the cable side and the optical fiber terminal on the controller side is set to an initial resistance value.

[0108] Exemplarily, when the terminal mating cavity is in a sealed state, the resistance value between the cable-side optical fiber terminal and the controller-side optical fiber terminal is set to an initial resistance value R0. That is, the resistance value between the two in the pre-insertion state is the initial resistance value R0. The resistance value between the cable-side optical fiber terminal and the controller-side optical fiber terminal is determined according to the contact area between the cable-side optical fiber terminal and the controller-side optical fiber terminal.

[0109] S203: Determine a real-time resistance value between the optical fiber terminal at the cable side and the optical fiber terminal at the controller side.

[0110] Exemplarily, the real-time resistance value between the cable-side optical fiber terminal and the controller-side optical fiber terminal may be determined based on the contact area between the cable-side optical fiber terminal and the controller-side optical fiber terminal.

[0111] S205: Based on the relationship between the real-time resistance value and the initial resistance value, determine whether the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side are connected.

[0112] Exemplarily, whether the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side are connected can be determined based on comparing the difference between the real-time resistance value and the initial resistance value.

[0113] The embodiment of the present application can determine whether the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side are connected according to the above method, thereby judging whether the fiber optic terminal on the cable side is properly inserted into the fiber optic terminal on the controller side, and further effectively ensuring that the connection between the two is carried out in a clean state, and can effectively solve the dust contamination on the fiber optic terminal surface that may be introduced during assembly and maintenance in a vehicle environment, and reduce the risk of communication abnormality caused by the attenuation of the optical port signal quality during the connection and mutual mating between the optical fiber cable and the optical port of the domain controller.

[0114] As an optional implementation, in the above step S201, when the terminal mating cavity is in a closed state, after setting the resistance value between the optical fiber terminal on the cable side and the optical fiber terminal on the controller side to an initial resistance value, the above method further includes:

[0115] S2011: When the limiting device fails, the resistance value between the optical fiber terminal on the cable side and the optical fiber terminal on the controller side is determined to be a first resistance value.

[0116] For example, after the cable-side optical fiber terminal enters the controller-side optical fiber terminal, before the vacuum operation is performed, that is, in the pre-insertion stage, the distance between it and the controller-side optical fiber terminal exceeds the initial distance corresponding to the limit device, then the limit device fails, and the resistance value between the cable-side optical fiber terminal and the controller-side optical fiber terminal is the first resistance value. And the first resistance value is greater than the initial resistance value, that is, R1>R0.

[0117] Optionally, at this time, a prompt will be given that the limit device has failed, prompting a replacement or repair.

[0118] S2012: When the distance that the optical fiber terminal on the cable side enters into the terminal mating cavity is less than the initial distance, the resistance value between the optical fiber terminal on the cable side and the optical fiber terminal on the controller side is determined as a second resistance value.

[0119] For example, after the cable-side optical fiber terminal enters the controller-side optical fiber terminal, before the vacuum operation is performed, that is, in the pre-insertion stage, the distance between it and the controller-side optical fiber terminal is less than the initial distance corresponding to the limit device, then this means that it has not been inserted into the specified position, and the cable-side optical fiber terminal cannot cooperate with the controller-side optical fiber terminal to form a closed cavity. At this time, the resistance value between the cable-side optical fiber terminal and the controller-side optical fiber terminal is the second resistance value. The second resistance value is greater than the initial resistance value, and R2>R0.

[0120] Optionally, you will be prompted to insert the cable-side fiber optic terminal further.

[0121] In the embodiment of the present application, by limiting the resistance value between the fiber optic terminal on the cable side and the fiber optic terminal on the controller side under abnormal circumstances, it is helpful to identify whether the fiber optic terminal on the cable side cooperates with the fiber optic terminal on the controller side and whether a closed state is formed when the fiber optic terminal on the cable side enters, thereby ensuring the smooth execution of subsequent vacuum pumping operations and other processes, and effectively ensuring that the connection between the fiber optic terminal on the cable side and the fiber optic terminal on the controller side is carried out in a clean state, which can effectively solve the dust contamination on the fiber optic terminal surface that may be introduced during assembly and maintenance in a vehicle environment, and reduce the risk of communication abnormality caused by the attenuation of the optical port signal quality during the connection and mutual mating between the optical fiber cable and the optical port of the domain controller.

[0122] As an optional implementation, in the above step S205, determining whether the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side are connected based on the relationship between the real-time resistance value and the initial resistance value includes:

[0123] Based on the relationship between the real-time resistance value and the initial resistance value, based on the relationship between the real-time resistance value and the first resistance value, and based on the relationship between the real-time resistance value and the second resistance value, determine whether the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side are connected.

[0124] Exemplarily, the contact area between the cable-side fiber optic terminal and the controller-side fiber optic terminal can be determined based on the difference between the real-time resistance R and the initial resistance value R0, the difference between the real-time resistance value R and the first resistance value R1, and the difference between the real-time resistance value R and the second resistance value R2, thereby determining whether the fiber optic terminal surface of the cable-side fiber optic terminal and the fiber optic terminal surface of the controller-side fiber optic terminal are connected.

[0125] As an optional implementation manner, the above-mentioned determination of whether the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side are connected based on the relationship between the real-time resistance value and the initial resistance value, based on the relationship between the real-time resistance value and the first resistance value, and based on the relationship between the real-time resistance value and the second resistance value includes:

[0126] When the real-time resistance value is greater than or equal to the initial resistance value, and the real-time resistance value is greater than the first resistance value, and the real-time resistance value is greater than the second resistance value, it is determined that the fiber terminal surface of the fiber optic terminal on the cable side and the fiber terminal surface of the fiber optic terminal on the controller side are connected.

[0127] Exemplarily, when the real-time resistance value R is greater than or equal to the initial resistance value R0, and the real-time resistance value R is greater than the first resistance value R1, and the real-time resistance value R is greater than the second resistance value R2, it is determined that the fiber terminal surface of the fiber optic terminal on the cable side and the fiber terminal surface of the fiber optic terminal on the controller side are connected.

[0128] It should be noted that the above resistance values ​​of R1 and R2 are determined based on empirical values, theoretical calculations and actual measurement verification, but the above resistance relationship is achieved when the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side are connected.

[0129] The embodiment of the present application can determine whether the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side are connected according to the resistance values ​​of the fiber optic terminal on the cable side and the fiber optic terminal on the controller side according to the above method, thereby judging whether the fiber optic terminal on the cable side is properly inserted into the fiber optic terminal on the controller side, and further effectively ensuring that the connection between the two is carried out in a clean state, and can effectively solve the dust contamination on the fiber optic terminal surface that may be introduced during assembly and maintenance in a vehicle environment, and reduce the risk of communication abnormality caused by the attenuation of the optical port signal quality when connecting and mating the optical fiber cable and the optical port of the domain controller.

[0130] On the other hand, the embodiment of the present application further provides an optical fiber structure, the optical fiber structure includes a controller-side optical fiber terminal and a cable-side optical fiber terminal, the controller-side optical fiber terminal includes a controller-side structural component, the controller-side structural component includes a power supply device, a vacuum device and a terminal mutual mating cavity; the optical fiber terminal surface of the cable-side optical fiber terminal and the optical fiber terminal surface of the controller-side optical fiber are arranged in the terminal mutual mating cavity;

[0131] The power supply device is used to supply power to the optical fiber terminal on the cable side when the optical fiber terminal on the controller side detects that the optical fiber terminal on the cable side enters the terminal mating cavity; the vacuum device is used to vacuum the terminal mating cavity to make the terminal mating cavity clean and in a negative pressure state;

[0132] The optical fiber structure is processed according to the above method so that the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side are connected.

[0133] For example, Figure 6 As shown, after the above-mentioned processing method of the optical fiber terminal, an optical fiber structure is obtained. The optical fiber structure is divided into two main parts, namely, the optical fiber terminal A on the controller side and the optical fiber terminal B on the cable side. The optical fiber terminal A on the controller side includes a power supply device, a vacuum device and a terminal mating cavity; the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber on the controller side are arranged in the terminal mating cavity; the power supply device is used to supply power to the optical fiber terminal on the cable side when the optical fiber terminal on the controller side detects that the optical fiber terminal on the cable side enters the terminal mating cavity, that is, the power supply of the integrated circuit device of the optical fiber terminal B structural component is provided by the integrated circuit of the optical fiber terminal A part of the structural component located on the controller side; the vacuum device is used to vacuum the terminal mating cavity to make the terminal mating cavity clean and negative pressure.

[0134] Optionally, the vacuum pumping device is connected to the inside of the terminal mating cavity, and the air extraction port is located in the structural component where the optical fiber terminal A on the controller side is located.

[0135] Optionally, the main housing portion of the terminal inter-mating cavity is fixed to one side of the controller optical fiber terminal.

[0136] The embodiment of the present application adopts the optical fiber structure of the above structure to connect and mate with each other. A low-pressure or even vacuum cavity is formed at the moment when the optical fiber terminal on the cable side is inserted, so that the optical fiber terminals can be connected and mate with each other in a dust-free environment. It can effectively solve the dust pollution on the surface of the optical fiber terminal that may be introduced during assembly and maintenance in a vehicle environment, and reduce the risk of communication abnormality caused by the attenuation of the optical port signal quality when connecting and mating between the optical fiber cable and the optical port of the domain controller; at the same time, the pressure difference between the inside and outside of the cavity is used to assist the mutual mating between the optical fiber terminal on the cable side and the optical fiber terminal on the controller, thereby improving the convenience of the wiring harness layout and maintenance links of the entire vehicle.

[0137] As an optional implementation, a limiting device is provided in the terminal mating cavity, and the limiting device is located on a side of the optical fiber terminal surface away from the controller-side optical fiber terminal in the terminal mating cavity;

[0138] The limiting device is used to control the distance between the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side according to the difference between the external force torque and the preset torque threshold, so that when the external force torque is less than the preset torque threshold, the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side cannot be connected; the external force torque is the torque applied to the fiber optic terminal on the cable side determined based on the atmospheric pressure and the cavity pressure.

[0139] For example, see Figure 7 A limiting device is provided inside the terminal mating cavity. The limiting device is provided on a side away from the fiber optic terminal surface of the controller-side fiber optic terminal, and is used to prevent the fiber optic terminal on the cable side and the fiber optic terminal on the controller side from being connected before the terminal mating cavity reaches a clean state and a negative pressure state. That is, the limiting device is used to control the distance between the fiber optic terminal surface of the cable-side fiber optic terminal and the fiber optic terminal surface of the controller-side fiber optic terminal according to the difference between the external force torque and the preset torque threshold, so that when the external force torque is less than the preset torque threshold, the fiber optic terminal surface of the cable-side fiber optic terminal and the fiber optic terminal surface of the controller-side fiber optic terminal cannot be connected, corresponding to Figure 7 The position of the fiber optic terminal surface B before breaking the limit; when the external force torque is greater than the preset torque threshold, it means that the terminal mating cavity has reached a clean state and a negative pressure state. Under the action of negative pressure, the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side are connected, corresponding to Figure 7 The position of the B optical fiber terminal surface after breaking through the limit.

[0140] Optionally, a limit detection ring C is further provided in the terminal inter-matching cavity, and the limit detection ring C is provided on a side away from the optical fiber terminal on the controller side, and the distance between the limit device and the optical fiber terminal surface on the controller side is smaller than the distance between the limit detection ring C and the optical fiber terminal surface on the controller side. Figure 5 As shown, the resistance between the controller-side optical fiber terminal A and the cable-side optical fiber terminal B can be calculated based on the area of ​​the contact surface between the two, so that the connection status between the cable-side optical fiber terminal B and the controller-side optical fiber terminal A can be determined.

[0141] The embodiment of the present application can effectively ensure that the connection between the optical fiber terminal on the cable side and the optical fiber terminal on the controller side is carried out in a clean state through a limiting device, which can effectively solve the dust contamination on the surface of the optical fiber terminal that may be introduced during assembly and maintenance in a vehicle-mounted environment, and reduce the risk of communication abnormality caused by the attenuation of the optical port signal quality when connecting and mating between the optical fiber cable and the optical port of the domain controller; at the same time, the pressure difference between the inside and outside of the cavity is used to assist the mutual mating between the optical fiber terminal on the cable side and the optical fiber terminal on the controller, thereby reducing or eliminating the offset of the central axis between the optical fiber pairs, and improving the convenience of the wiring harness layout and maintenance links of the entire vehicle.

[0142] On the other hand, an embodiment of the present application provides a vehicle-mounted domain control system, the vehicle-mounted domain control system includes a central centralized domain control and a first preset number of regional controllers, the central centralized domain control includes a chassis domain control; the first preset number of regional controllers are respectively arranged on the vehicle; the chassis domain control is arranged at a position close to the central centralized domain control; the distance between the chassis domain control and the central centralized domain control is less than the distance between the first preset number of regional controllers and the central centralized domain control;

[0143] The chassis domain control transmits data with the central domain control via Ethernet and serial communication bus protocols; the regional controller and the central domain control transmit data via optical fiber, which includes the above-mentioned optical fiber structure.

[0144] For example, Ethernet (ETH) is a widely used local area network (LAN) technology developed by Xerox in the early 1970s, and the initial standard was jointly released with Intel and DEC in 1980. Ethernet is based on the CSMA / CD (Carrier Sense Multiple Access with Collision Detection) protocol, uses twisted pair or optical fiber as the transmission medium, and supports communication at different rates, such as 10Mbps, 100Mbps, 1Gbps or even higher. It identifies devices through MAC addresses, allows devices in the network to broadcast or unicast transmission, and is the infrastructure for modern office, home and data center communications.

[0145] CAN bus (Controller Area Network) is an efficient serial communication protocol, originally developed by Bosch in Germany in the 1980s. It is suitable for the automotive electronics field and is used to connect multiple electronic control units (ECUs) to achieve high-speed and reliable data exchange. CAN bus is known for its multi-master control structure, non-destructive arbitration mechanism, powerful error detection and processing capabilities, and real-time and reliability of data transmission. It has been widely used in many fields such as automobiles, industrial automation, ships, and medical equipment. With the development of technology, CAN has also evolved and launched the CAN FD (Flexible Data-rate) version that supports higher data transmission rates.

[0146] See also Figure 8 The vehicle-mounted domain control system provided in the embodiment of the present application is a centralized vehicle-mounted domain control system solution architecture based on a central + regional optical network. Specifically, the vehicle-mounted domain control system includes a central centralized domain control and a first preset number of regional controllers, and the central centralized domain control includes a chassis domain control.

[0147] In the above-mentioned vehicle-mounted domain control system, the distance between the chassis domain control and the central centralized domain control is smaller than the distance between the first preset number of regional controllers and the central centralized domain control.

[0148] Optionally, key chassis domain controllers, such as IBC (Integrated Body Control) and EPS (Electronic Power Steering), can be selected as independent chassis domain controllers.

[0149] The first preset number is greater than or equal to four. The first preset number of regional controllers are distributed at the left front, right front, left rear, right rear and other positions of the vehicle according to the layout position of the vehicle body. Due to the far distance from the central domain control, high-speed data transmission can be selected through optical fiber; Ethernet and CAN bus are used as auxiliary data channels for low-speed and non-important signal transmission.

[0150] Optionally, the centralized domain control also includes intelligent cockpit, intelligent driving, and some chassis control units. The chassis domain control and the central domain control communicate via Ethernet and serial bus protocols.

[0151] The embodiment of the present application provides a vehicle-mounted domain control system, in which regional short-distance data communication is carried out through Ethernet or CAN bus within the range of the central domain control; high-speed data intercommunication can be optionally carried out through optical fiber between the central domain control and each regional controller. That is, long-distance control is mainly based on optical network, which can achieve high-bandwidth data transmission while eliminating electromagnetic interference between electrical signals, and avoid the interference of electrical stress and magnetic stress of high-speed signal lines when the whole vehicle is laid. Under the next generation of central + regional vehicle architecture, longer-path whole vehicle wiring harness laying can be achieved. At the same time, optical fiber transmission uses the above-mentioned optical fiber structure, which can make the optical fiber terminal connection and mutual mating be carried out in a dust-free environment, which can effectively solve the dust pollution on the optical fiber terminal surface that may be introduced by assembly and maintenance in the vehicle environment, and reduce the risk of communication abnormality caused by the attenuation of optical port signal quality due to the connection and mutual mating between the optical fiber cable and the optical port of the domain controller; at the same time, the internal and external pressure difference of the cavity is used to assist the mutual mating between the optical fiber terminal on the cable side and the optical fiber terminal of the controller, thereby improving the convenience of the wiring harness laying and maintenance of the whole vehicle.

[0152] As an optional implementation, the vehicle-mounted domain control system further includes a second preset number of vehicle control units;

[0153] The vehicle control unit transmits data with the regional controller via Ethernet and serial communication bus protocols.

[0154] For example, Figure 8 As shown, the vehicle domain control system also includes a second preset number of vehicle control units. Each regional controller and the vehicle control unit (VCU, Vehicle Control Unit) connected thereto communicate data through vehicle buses such as Ethernet and CAN bus within the scope of responsibility of the regional controller.

[0155] Optionally, the optical fiber medium used for high-speed data communication between the central domain controller and the key area controller may be single-mode or multi-mode optical fiber.

[0156] Optionally, Ethernet or CAN bus can be used for data exchange between the central domain control and chassis domain control, as well as short-distance data transmission within the jurisdiction of each regional controller.

[0157] The embodiment of the present application provides a vehicle-mounted domain control system, which performs regional short-distance data communication via Ethernet or CAN bus within the regional domain control range, realizes high-bandwidth data transmission, eliminates electromagnetic interference between electrical signals, and avoids interference from electrical stress and magnetic stress of high-speed signal lines when laying out the whole vehicle. Under the next generation of central + regional vehicle architecture, longer path wiring harness laying of the whole vehicle can be realized.

[0158] As an optional implementation manner, the central centralized domain control includes a third preset number of independent domain controllers, and the third preset number of independent domain controllers are decoupled from each other;

[0159] The third preset number of independent domain controllers includes a standby domain controller and a primary domain controller. The standby domain controller performs partial or full functional mirror redundancy for the primary domain controller in a primary-standby mirror backup manner.

[0160] Exemplarily, the centralized domain control includes a third preset number of independent domain controllers, and the third preset number of independent domain controllers are decoupled from each other, and mutual decoupling refers to reducing the mutual dependence between various components or modules in the system. Through decoupling, the flexibility, maintainability and scalability of the system can be improved.

[0161] The third preset number of independent domain controllers includes a standby domain controller and a primary domain controller. The standby domain controller performs partial or full functional mirroring redundancy for the primary domain controller through a master-slave mirroring backup method, thereby further improving system reliability.

[0162] Partial functional mirroring redundancy refers to duplicating only key functions or data to reduce resource consumption and improve efficiency. Full functional mirroring redundancy refers to duplicating all functions and data to ensure that complete services can be provided under any circumstances.

[0163] Optionally, the third preset number is preferably 2, which can maintain high availability, load balancing, and data redundancy while simplifying management and reducing cost-effectiveness.

[0164] The embodiment of the present application sets the number of independent domain controllers to multiple and decoupled from each other, which can improve the flexibility, maintainability and scalability of the system, and performs partial or full functional mirror redundancy for the main domain controller through the master-slave mirror backup method, further improving the system reliability, and performing regional short-distance data communication through Ethernet or CAN bus within the above-mentioned central domain control range and regional controller range; between the central domain control and each regional controller, high-speed data intercommunication can be optionally carried out through single-mode or multi-mode optical fiber, providing background data protection, and laying a solid foundation for the development of future smart vehicles.

[0165] It should be noted that the above-mentioned sequence of the embodiments of the present application is for description only and does not represent the advantages and disadvantages of the embodiments. The above-mentioned specific embodiments of this specification are described. Other embodiments are within the scope of the attached claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0166] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device and server embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments.

[0167] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0168] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for processing an optical fiber terminal, characterized in that: The method comprises: When it is detected that the optical fiber terminal on the cable side enters the terminal inter-matching cavity where the optical fiber terminal on the controller side is located, power is supplied to the optical fiber terminal on the cable side, and the optical fiber terminal on the controller side is controlled to cooperate with the optical fiber terminal on the cable side, so that the terminal inter-matching cavity is in a sealed state; Performing a vacuum operation on the terminal mating cavity to make the terminal mating cavity in a clean state and a negative pressure state; Determining a cavity pressure in the terminal inter-mating cavity, and determining a pressure difference between the cavity pressure and atmospheric pressure; Based on the pressure difference, the fiber terminal surface of the fiber optic terminal on the cable side is controlled to be close to the fiber terminal surface of the fiber optic terminal on the controller side, so that the fiber terminal surface of the fiber optic terminal on the cable side and the fiber terminal surface of the fiber optic terminal on the controller side are connected.

2. The method according to claim 1, characterized in that The method further comprises: Determine a preset torque threshold of a limit device; the limit device is located on a side of the optical fiber terminal surface away from the controller-side optical fiber terminal in the terminal mating cavity; Determining the external force torque applied to the optical fiber terminal at the cable side based on the atmospheric pressure and the cavity pressure; Based on the preset torque threshold, determining an initial distance between a fiber terminal surface of the fiber terminal on the cable side and a fiber terminal surface of the fiber terminal on the controller side when the fiber terminal on the controller side and the fiber terminal on the cable side cooperate with each other; Determining the working state of the limit device according to the difference between the external force torque and the preset torque threshold; Based on the working state of the limiting device, the distance between the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side and the size of the initial distance are controlled so that when the external force torque is less than the preset torque threshold, the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side cannot be connected.

3. The method according to claim 2, characterized in that The determining the working state of the limit device according to the difference between the external force torque and the preset torque threshold comprises: When the external force torque is less than the preset torque threshold, determining that the working state of the limit device is a limit state; The controlling the distance between the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side based on the working state of the limiting device comprises: When the limiting device is in the limiting state, the distance between the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side is controlled to be greater than or equal to the initial distance.

4. The method according to claim 2, characterized in that: The determining the working state of the limit device according to the difference between the external force torque and the preset torque threshold comprises: When the external force torque is greater than or equal to the preset torque threshold, determining that the working state of the limit device is a non-limiting state; The controlling the distance between the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side based on the working state of the limiting device comprises: When the limiting device is in a non-limiting state, the distance between the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side is controlled to be smaller than the initial distance so that the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side are connected.

5. The method according to claim 2, characterized in that: The method further comprises: When the terminal mating cavity is in a sealed state, the resistance value between the optical fiber terminal on the cable side and the optical fiber terminal on the controller side is set to an initial resistance value; Determine a real-time resistance value between the optical fiber terminal on the cable side and the optical fiber terminal on the controller side; Based on the relationship between the real-time resistance value and the initial resistance value, it is determined whether the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side are connected.

6. The method according to claim 5, characterized in that When the terminal mating cavity is in a sealed state, after setting the resistance value between the cable-side optical fiber terminal and the controller-side optical fiber terminal to an initial resistance value, the method further includes: When the limiting device fails, the resistance value between the optical fiber terminal on the cable side and the optical fiber terminal on the controller side is determined to be a first resistance value; When the distance that the cable-side optical fiber terminal enters into the terminal mating cavity is less than the initial distance, the resistance value between the cable-side optical fiber terminal and the controller-side optical fiber terminal is determined as a second resistance value.

7. The method according to claim 6, characterized in that The determining, based on the relationship between the real-time resistance value and the initial resistance value, whether the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side are connected comprises: Based on the relationship between the real-time resistance value and the initial resistance value, based on the relationship between the real-time resistance value and the first resistance value, and based on the relationship between the real-time resistance value and the second resistance value, determine whether the fiber optic terminal surface of the fiber optic terminal on the cable side and the fiber optic terminal surface of the fiber optic terminal on the controller side are connected.

8. The method according to claim 7, characterized in that The determining whether the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side are connected based on the relationship between the real-time resistance value and the initial resistance value, based on the relationship between the real-time resistance value and the first resistance value, and based on the relationship between the real-time resistance value and the second resistance value includes: When the real-time resistance value is greater than or equal to the initial resistance value, and the real-time resistance value is greater than the first resistance value, and the real-time resistance value is greater than the second resistance value, it is determined that the fiber terminal surface of the fiber optic terminal on the cable side and the fiber terminal surface of the fiber optic terminal on the controller side are connected.

9. An optical fiber structure, characterized in that: The optical fiber structure includes a controller-side optical fiber terminal and a cable-side optical fiber terminal, the controller-side optical fiber terminal includes a controller-side structural component, and the controller-side structural component includes a power supply device, a vacuum device and a terminal mating cavity; The optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber on the controller side are arranged in the terminal mutual mating cavity; The power supply device is used to supply power to the optical fiber terminal on the cable side when the optical fiber terminal on the controller side detects that the optical fiber terminal on the cable side enters the terminal mating cavity; the vacuum device is used to vacuum the terminal mating cavity to make the terminal mating cavity clean and in a negative pressure state; The optical fiber structure is processed according to the method described in any one of claims 1 to 8 so that the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side are connected.

10. The optical fiber structure according to claim 9, characterized in that: A limiting device is provided in the terminal mating cavity, and the limiting device is located at a side of the terminal mating cavity away from the optical fiber terminal surface of the controller-side optical fiber terminal; The limiting device is used to control the distance between the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side according to the difference between the external force torque and the preset torque threshold, so that when the external force torque is less than the preset torque threshold, the optical fiber terminal surface of the optical fiber terminal on the cable side and the optical fiber terminal surface of the optical fiber terminal on the controller side cannot be connected; The external force torque is a torque applied to the cable-side optical fiber terminal determined based on the atmospheric pressure and the cavity pressure.

11. A vehicle-mounted domain control system, characterized in that: The vehicle-mounted domain control system includes a central centralized domain control and a first preset number of regional controllers, the central centralized domain control includes a chassis domain control; the first preset number of regional controllers are respectively arranged on the vehicle; the chassis domain control is arranged at a position close to the central centralized domain control; the distance between the chassis domain control and the central centralized domain control is less than the distance between the first preset number of regional controllers and the central centralized domain control; The chassis domain controller transmits data with the central domain controller via Ethernet and serial communication bus protocols; the regional controller and the central domain controller transmit data via optical fiber, and the optical fiber includes the optical fiber structure as described in claims 9-10.

12. The vehicle-mounted domain control system according to claim 11, characterized in that: The vehicle-mounted domain control system further includes a second preset number of vehicle control units; The vehicle control unit transmits data with the zone controller via the Ethernet and the serial communication bus protocol.

13. The vehicle-mounted domain control system according to claim 11, characterized in that: The central centralized domain control includes a third preset number of independent domain controllers, and the third preset number of independent domain controllers are decoupled from each other; The third preset number of independent domain controllers includes a standby domain controller and a primary domain controller, and the standby domain controller performs partial or full functional mirror redundancy for the primary domain controller through a primary-standby mirror backup method.

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